diff --git a/cyclonedx/model/bom.py b/cyclonedx/model/bom.py
index 7cb0081e..687afaf4 100644
--- a/cyclonedx/model/bom.py
+++ b/cyclonedx/model/bom.py
@@ -44,7 +44,7 @@
 from ..serialization import UrnUuidHelper
 from . import _BOM_LINK_PREFIX, ExternalReference, Property
 from .bom_ref import BomRef
-from .component import Component
+from .component import Component, _ComponentValidationHelper
 from .contact import OrganizationalContact, OrganizationalEntity
 from .definition import Definitions
 from .dependency import Dependable, Dependency
@@ -863,6 +863,18 @@ def validate(self) -> bool:
                 raise LicenseExpressionAlongWithOthersException(
                     f'Found LicenseExpression along with others licenses in: {elem!r}')
 
+        # 4. Validates that each component conforms to CycloneDX 1.7 constraints:
+        # - root component may not have is_external=true
+        # - version and version_range are mutually exclusive
+        # - version_range requires is_external=true
+        if self.metadata.component and self.metadata.component.is_external:
+            warn(
+                f'The Component this BOM is describing {self.metadata.component.purl} must not have is_external=true.',
+                category=UserWarning, stacklevel=1
+            )
+        for _c in self._get_all_components():
+            _ComponentValidationHelper.validate(_c)
+
         return True
 
     def __comparable_tuple(self) -> _ComparableTuple:
diff --git a/cyclonedx/model/component.py b/cyclonedx/model/component.py
index bc7152ae..97704210 100644
--- a/cyclonedx/model/component.py
+++ b/cyclonedx/model/component.py
@@ -34,7 +34,7 @@
 
 from .._internal.bom_ref import bom_ref_from_str as _bom_ref_from_str
 from .._internal.compare import ComparablePackageURL as _ComparablePackageURL, ComparableTuple as _ComparableTuple
-from ..exception.model import InvalidOmniBorIdException, InvalidSwhidException
+from ..exception.model import InvalidOmniBorIdException, InvalidSwhidException, MutuallyExclusivePropertiesException
 from ..exception.serialization import (
     CycloneDxDeserializationException,
     SerializationOfUnexpectedValueException,
@@ -991,6 +991,7 @@ def __init__(
         publisher: Optional[str] = None,
         group: Optional[str] = None,
         version: Optional[str] = None,
+        version_range: Optional[str] = None,
         description: Optional[str] = None,
         scope: Optional[ComponentScope] = None,
         is_external: Optional[bool] = None,
@@ -1025,6 +1026,8 @@ def __init__(
         self.publisher = publisher
         self.group = group
         self.name = name
+        self.version = version
+        self.version_range = version_range
         self.description = description
         self.scope = scope
         self.is_external = is_external
@@ -1047,7 +1050,6 @@ def __init__(
         # spec-deprecated properties below
         self.author = author
         self.modified = modified
-        self.version = version
 
     @property
     @serializable.type_mapping(_ComponentTypeSerializationHelper)
@@ -1272,6 +1274,34 @@ def version(self, version: Optional[str]) -> None:
             warn('`@.version`has a maximum length of 1024 from CycloneDX v1.6 onwards.', UserWarning)
         self._version = version
 
+    @property
+    @serializable.view(SchemaVersion1Dot7)
+    @serializable.json_name('versionRange')
+    @serializable.xml_name('versionRange')
+    @serializable.xml_sequence(8)
+    @serializable.xml_string(serializable.XmlStringSerializationType.NORMALIZED_STRING)
+    def version_range(self) -> Optional[str]:
+        """
+        For an external component, this specifies the accepted version range.
+
+        The value must adhere to the Package URL Version Range syntax (vers), as defined at
+        https://github.com/package-url/vers-spec
+
+        May only be used if .isExternal is set to true.
+
+        Must be used exclusively, either 'version' or 'version_range', but not both.
+
+        Returns:
+            `str` if set, else `None`
+        """
+        return self._version_range
+
+    @version_range.setter
+    def version_range(self, version_range: Optional[str]) -> None:
+        if version_range is not None and not 1 <= len(version_range) <= 4096:
+            warn('`@.version_range`has a minimum length of 1 and a maximum length of 4096 characters.', UserWarning)
+        self._version_range = version_range
+
     @property
     @serializable.xml_sequence(9)
     @serializable.xml_string(serializable.XmlStringSerializationType.NORMALIZED_STRING)
@@ -1715,7 +1745,7 @@ def __comparable_tuple(self) -> _ComparableTuple:
             _ComparableTuple(self.components), self.evidence, self.release_notes, self.modified,
             _ComparableTuple(self.authors), _ComparableTuple(self.omnibor_ids), self.manufacturer,
             self.crypto_properties, _ComparableTuple(self.tags),
-            self.is_external,
+            self.is_external, self.version_range,
         ))
 
     def __eq__(self, other: object) -> bool:
@@ -1732,5 +1762,38 @@ def __hash__(self) -> int:
         return hash(self.__comparable_tuple())
 
     def __repr__(self) -> str:
+        version = f'versionRange={self.version_range}' \
+            if self.version_range is not None \
+            else f'version={self.version}'
         return f'<Component bom-ref={self.bom_ref!r}, group={self.group}, name={self.name}, ' \
-            f'version={self.version}, type={self.type}>'
+            f'{version}, type={self.type}>'
+
+
+class _ComponentValidationHelper:
+    """  THIS CLASS IS NON-PUBLIC API  """
+
+    @staticmethod
+    def validate_version_choice(component: Component) -> None:
+        """ Validates that version and version_range are not both set. """
+        if component.version is not None and component.version_range is not None:
+            raise MutuallyExclusivePropertiesException(
+                f'Component cannot have both `version` and `version_range` set. Component: {component.name}'
+            )
+
+    @staticmethod
+    def validate_version_range_requirements(component: Component) -> None:
+        """ Validates that version_range is used correctly with is_external. """
+        if component.version_range is not None and not component.is_external:
+            raise MutuallyExclusivePropertiesException(
+                f'Component cannot have `version_range` set unless `is_external=true`. Component: {component.name}'
+            )
+
+    @staticmethod
+    def validate(component: Component) -> None:
+        """
+        Validates that the component conforms to CycloneDX 1.7 constraints:
+        - version and version_range are mutually exclusive
+        - version_range requires is_external=true
+        """
+        _ComponentValidationHelper.validate_version_choice(component)
+        _ComponentValidationHelper.validate_version_range_requirements(component)
diff --git a/tests/_data/models.py b/tests/_data/models.py
index e2052878..722a3b88 100644
--- a/tests/_data/models.py
+++ b/tests/_data/models.py
@@ -600,7 +600,26 @@ def get_bom_with_external_references() -> Bom:
 
 
 def get_bom_with_external_component_1_7() -> Bom:
-    bom = _make_bom(components=[get_component_external()])
+    bom = _make_bom(components=[
+        get_component_external_without_version(),
+        get_component_external_with_version(),
+        get_component_external_with_version_range(),
+    ])
+    return bom
+
+
+def get_bom_with_external_component_with_version_and_version_range_invalid() -> Bom:
+    bom = _make_bom(components=[get_component_external_with_version_and_version_range_invalid()])
+    return bom
+
+
+def get_bom_with_non_external_explicit_component_with_version_range_invalid() -> Bom:
+    bom = _make_bom(components=[get_component_non_external_explicit_with_version_range_invalid()])
+    return bom
+
+
+def get_bom_with_non_external_implicit_component_with_version_range_invalid() -> Bom:
+    bom = _make_bom(components=[get_component_non_external_implicit_with_version_range_invalid()])
     return bom
 
 
@@ -864,9 +883,20 @@ def get_component_setuptools_simple(
     )
 
 
-def get_component_external() -> Component:
+def get_component_external_without_version() -> Component:
     return Component(
-        name='external-lib', version='1.0.0',
+        name='external-lib',
+        type=ComponentType.LIBRARY,
+        is_external=True,
+        scope=ComponentScope.REQUIRED,
+        bom_ref='external-lib',
+    )
+
+
+def get_component_external_with_version() -> Component:
+    return Component(
+        name='external-lib',
+        version='1.0.0',
         type=ComponentType.LIBRARY,
         is_external=True,
         scope=ComponentScope.REQUIRED,
@@ -874,6 +904,47 @@ def get_component_external() -> Component:
     )
 
 
+def get_component_external_with_version_range() -> Component:
+    return Component(
+        name='external-lib',
+        version_range='vers:all/*',
+        type=ComponentType.LIBRARY,
+        is_external=True,
+        scope=ComponentScope.REQUIRED,
+        bom_ref='external-lib-with-range',
+    )
+
+
+def get_component_external_with_version_and_version_range_invalid() -> Component:
+    return Component(
+        name='external-lib',
+        version='1.0.0',
+        version_range='vers:all/*',
+        type=ComponentType.LIBRARY,
+        is_external=True,
+        bom_ref='external-lib-with-version-and-version-range',
+    )
+
+
+def get_component_non_external_explicit_with_version_range_invalid() -> Component:
+    return Component(
+        name='internal-lib',
+        version_range='vers:all/*',
+        type=ComponentType.LIBRARY,
+        is_external=False,
+        bom_ref='internal-lib-with-range',
+    )
+
+
+def get_component_non_external_implicit_with_version_range_invalid() -> Component:
+    return Component(
+        name='internal-lib',
+        version_range='vers:all/*',
+        type=ComponentType.LIBRARY,
+        bom_ref='internal-lib-with-range',
+    )
+
+
 def get_component_setuptools_simple_no_version(bom_ref: Optional[str] = None) -> Component:
     return Component(
         name='setuptools', bom_ref=bom_ref or 'pkg:pypi/setuptools?extension=tar.gz',
diff --git a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.0.xml.bin b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.0.xml.bin
index aaae8337..d7c68502 100644
--- a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.0.xml.bin
+++ b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.0.xml.bin
@@ -7,5 +7,17 @@
       <scope>required</scope>
       <modified>false</modified>
     </component>
+    <component type="library">
+      <name>external-lib</name>
+      <version/>
+      <scope>required</scope>
+      <modified>false</modified>
+    </component>
+    <component type="library">
+      <name>external-lib</name>
+      <version/>
+      <scope>required</scope>
+      <modified>false</modified>
+    </component>
   </components>
 </bom>
diff --git a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.1.xml.bin b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.1.xml.bin
index 06e044d3..729fb705 100644
--- a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.1.xml.bin
+++ b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.1.xml.bin
@@ -6,5 +6,15 @@
       <version>1.0.0</version>
       <scope>required</scope>
     </component>
+    <component type="library" bom-ref="external-lib">
+      <name>external-lib</name>
+      <version/>
+      <scope>required</scope>
+    </component>
+    <component type="library" bom-ref="external-lib-with-range">
+      <name>external-lib</name>
+      <version/>
+      <scope>required</scope>
+    </component>
   </components>
 </bom>
diff --git a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.2.json.bin b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.2.json.bin
index fe5a4e0a..fe516737 100644
--- a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.2.json.bin
+++ b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.2.json.bin
@@ -6,11 +6,31 @@
       "scope": "required",
       "type": "library",
       "version": "1.0.0"
+    },
+    {
+      "bom-ref": "external-lib",
+      "name": "external-lib",
+      "scope": "required",
+      "type": "library",
+      "version": ""
+    },
+    {
+      "bom-ref": "external-lib-with-range",
+      "name": "external-lib",
+      "scope": "required",
+      "type": "library",
+      "version": ""
     }
   ],
   "dependencies": [
+    {
+      "ref": "external-lib"
+    },
     {
       "ref": "external-lib-1.0.0"
+    },
+    {
+      "ref": "external-lib-with-range"
     }
   ],
   "metadata": {
diff --git a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.2.xml.bin b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.2.xml.bin
index 266020af..f3201d9d 100644
--- a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.2.xml.bin
+++ b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.2.xml.bin
@@ -9,8 +9,20 @@
       <version>1.0.0</version>
       <scope>required</scope>
     </component>
+    <component type="library" bom-ref="external-lib">
+      <name>external-lib</name>
+      <version/>
+      <scope>required</scope>
+    </component>
+    <component type="library" bom-ref="external-lib-with-range">
+      <name>external-lib</name>
+      <version/>
+      <scope>required</scope>
+    </component>
   </components>
   <dependencies>
+    <dependency ref="external-lib"/>
     <dependency ref="external-lib-1.0.0"/>
+    <dependency ref="external-lib-with-range"/>
   </dependencies>
 </bom>
diff --git a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.3.json.bin b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.3.json.bin
index 8500a9f7..fd2b3578 100644
--- a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.3.json.bin
+++ b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.3.json.bin
@@ -6,11 +6,31 @@
       "scope": "required",
       "type": "library",
       "version": "1.0.0"
+    },
+    {
+      "bom-ref": "external-lib",
+      "name": "external-lib",
+      "scope": "required",
+      "type": "library",
+      "version": ""
+    },
+    {
+      "bom-ref": "external-lib-with-range",
+      "name": "external-lib",
+      "scope": "required",
+      "type": "library",
+      "version": ""
     }
   ],
   "dependencies": [
+    {
+      "ref": "external-lib"
+    },
     {
       "ref": "external-lib-1.0.0"
+    },
+    {
+      "ref": "external-lib-with-range"
     }
   ],
   "metadata": {
diff --git a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.3.xml.bin b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.3.xml.bin
index 120d5d28..87012c02 100644
--- a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.3.xml.bin
+++ b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.3.xml.bin
@@ -9,8 +9,20 @@
       <version>1.0.0</version>
       <scope>required</scope>
     </component>
+    <component type="library" bom-ref="external-lib">
+      <name>external-lib</name>
+      <version/>
+      <scope>required</scope>
+    </component>
+    <component type="library" bom-ref="external-lib-with-range">
+      <name>external-lib</name>
+      <version/>
+      <scope>required</scope>
+    </component>
   </components>
   <dependencies>
+    <dependency ref="external-lib"/>
     <dependency ref="external-lib-1.0.0"/>
+    <dependency ref="external-lib-with-range"/>
   </dependencies>
 </bom>
diff --git a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.4.json.bin b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.4.json.bin
index c2c3bbea..be5c2271 100644
--- a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.4.json.bin
+++ b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.4.json.bin
@@ -6,11 +6,29 @@
       "scope": "required",
       "type": "library",
       "version": "1.0.0"
+    },
+    {
+      "bom-ref": "external-lib",
+      "name": "external-lib",
+      "scope": "required",
+      "type": "library"
+    },
+    {
+      "bom-ref": "external-lib-with-range",
+      "name": "external-lib",
+      "scope": "required",
+      "type": "library"
     }
   ],
   "dependencies": [
+    {
+      "ref": "external-lib"
+    },
     {
       "ref": "external-lib-1.0.0"
+    },
+    {
+      "ref": "external-lib-with-range"
     }
   ],
   "metadata": {
diff --git a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.4.xml.bin b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.4.xml.bin
index 2d85c7de..7b4dea53 100644
--- a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.4.xml.bin
+++ b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.4.xml.bin
@@ -9,8 +9,18 @@
       <version>1.0.0</version>
       <scope>required</scope>
     </component>
+    <component type="library" bom-ref="external-lib">
+      <name>external-lib</name>
+      <scope>required</scope>
+    </component>
+    <component type="library" bom-ref="external-lib-with-range">
+      <name>external-lib</name>
+      <scope>required</scope>
+    </component>
   </components>
   <dependencies>
+    <dependency ref="external-lib"/>
     <dependency ref="external-lib-1.0.0"/>
+    <dependency ref="external-lib-with-range"/>
   </dependencies>
 </bom>
diff --git a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.5.json.bin b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.5.json.bin
index f3d16896..17875278 100644
--- a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.5.json.bin
+++ b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.5.json.bin
@@ -6,11 +6,29 @@
       "scope": "required",
       "type": "library",
       "version": "1.0.0"
+    },
+    {
+      "bom-ref": "external-lib",
+      "name": "external-lib",
+      "scope": "required",
+      "type": "library"
+    },
+    {
+      "bom-ref": "external-lib-with-range",
+      "name": "external-lib",
+      "scope": "required",
+      "type": "library"
     }
   ],
   "dependencies": [
+    {
+      "ref": "external-lib"
+    },
     {
       "ref": "external-lib-1.0.0"
+    },
+    {
+      "ref": "external-lib-with-range"
     }
   ],
   "metadata": {
diff --git a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.5.xml.bin b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.5.xml.bin
index f06f8a0b..56036b2a 100644
--- a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.5.xml.bin
+++ b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.5.xml.bin
@@ -9,9 +9,19 @@
       <version>1.0.0</version>
       <scope>required</scope>
     </component>
+    <component type="library" bom-ref="external-lib">
+      <name>external-lib</name>
+      <scope>required</scope>
+    </component>
+    <component type="library" bom-ref="external-lib-with-range">
+      <name>external-lib</name>
+      <scope>required</scope>
+    </component>
   </components>
   <dependencies>
+    <dependency ref="external-lib"/>
     <dependency ref="external-lib-1.0.0"/>
+    <dependency ref="external-lib-with-range"/>
   </dependencies>
   <properties>
     <property name="key1">val1</property>
diff --git a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.6.json.bin b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.6.json.bin
index bf66e848..3ac794bb 100644
--- a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.6.json.bin
+++ b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.6.json.bin
@@ -6,11 +6,29 @@
       "scope": "required",
       "type": "library",
       "version": "1.0.0"
+    },
+    {
+      "bom-ref": "external-lib",
+      "name": "external-lib",
+      "scope": "required",
+      "type": "library"
+    },
+    {
+      "bom-ref": "external-lib-with-range",
+      "name": "external-lib",
+      "scope": "required",
+      "type": "library"
     }
   ],
   "dependencies": [
+    {
+      "ref": "external-lib"
+    },
     {
       "ref": "external-lib-1.0.0"
+    },
+    {
+      "ref": "external-lib-with-range"
     }
   ],
   "metadata": {
diff --git a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.6.xml.bin b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.6.xml.bin
index c81104a7..c3a5bea0 100644
--- a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.6.xml.bin
+++ b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.6.xml.bin
@@ -9,9 +9,19 @@
       <version>1.0.0</version>
       <scope>required</scope>
     </component>
+    <component type="library" bom-ref="external-lib">
+      <name>external-lib</name>
+      <scope>required</scope>
+    </component>
+    <component type="library" bom-ref="external-lib-with-range">
+      <name>external-lib</name>
+      <scope>required</scope>
+    </component>
   </components>
   <dependencies>
+    <dependency ref="external-lib"/>
     <dependency ref="external-lib-1.0.0"/>
+    <dependency ref="external-lib-with-range"/>
   </dependencies>
   <properties>
     <property name="key1">val1</property>
diff --git a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.7.json.bin b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.7.json.bin
index c3c2f85b..3756d89f 100644
--- a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.7.json.bin
+++ b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.7.json.bin
@@ -7,11 +7,32 @@
       "scope": "required",
       "type": "library",
       "version": "1.0.0"
+    },
+    {
+      "bom-ref": "external-lib",
+      "isExternal": true,
+      "name": "external-lib",
+      "scope": "required",
+      "type": "library"
+    },
+    {
+      "bom-ref": "external-lib-with-range",
+      "isExternal": true,
+      "name": "external-lib",
+      "scope": "required",
+      "type": "library",
+      "versionRange": "vers:all/*"
     }
   ],
   "dependencies": [
+    {
+      "ref": "external-lib"
+    },
     {
       "ref": "external-lib-1.0.0"
+    },
+    {
+      "ref": "external-lib-with-range"
     }
   ],
   "metadata": {
diff --git a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.7.xml.bin b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.7.xml.bin
index b16d837f..e516611e 100644
--- a/tests/_data/snapshots/get_bom_with_external_component_1_7-1.7.xml.bin
+++ b/tests/_data/snapshots/get_bom_with_external_component_1_7-1.7.xml.bin
@@ -9,9 +9,20 @@
       <version>1.0.0</version>
       <scope>required</scope>
     </component>
+    <component type="library" bom-ref="external-lib" isExternal="true">
+      <name>external-lib</name>
+      <scope>required</scope>
+    </component>
+    <component type="library" bom-ref="external-lib-with-range" isExternal="true">
+      <name>external-lib</name>
+      <versionRange>vers:all/*</versionRange>
+      <scope>required</scope>
+    </component>
   </components>
   <dependencies>
+    <dependency ref="external-lib"/>
     <dependency ref="external-lib-1.0.0"/>
+    <dependency ref="external-lib-with-range"/>
   </dependencies>
   <properties>
     <property name="key1">val1</property>
diff --git a/tests/test_model_bom.py b/tests/test_model_bom.py
index 030ee4a5..fe319345 100644
--- a/tests/test_model_bom.py
+++ b/tests/test_model_bom.py
@@ -217,6 +217,13 @@ def test_warning_missing_dependency(self) -> None:
             self.assertEqual(len(w.warnings), 1)
             self.assertIn('has no defined dependencies ', str(w.warnings[0]))
 
+    def test_warning_root_component_is_external(self) -> None:
+        with self.assertWarns(expected_warning=UserWarning) as w:
+            bom = Bom(metadata=BomMetaData(component=Component(name='root_component', is_external=True)))
+            _ = JsonV1Dot7(bom).output_as_string()
+            self.assertEqual(len(w.warnings), 1)
+            self.assertIn('must not have is_external=true', str(w.warnings[0]))
+
     def test_empty_bom_defined_serial(self) -> None:
         serial_number = uuid4()
         bom = Bom(serial_number=serial_number)
diff --git a/tests/test_model_component.py b/tests/test_model_component.py
index f7b8fc80..b3d10236 100644
--- a/tests/test_model_component.py
+++ b/tests/test_model_component.py
@@ -304,6 +304,27 @@ def test_is_external_sorting(self) -> None:
         expected_components = reorder(components, expected_order)
         self.assertListEqual(sorted_components, expected_components)
 
+    def test_version_range_comparison(self) -> None:
+        component_all = Component(name='test-component', is_external=True, version_range='vers:all/*')
+        component_none = Component(name='test-component', is_external=True, version_range='vers:none/*')
+        self.assertEqual(component_all, component_all)
+        self.assertEqual(component_none, component_none)
+        self.assertNotEqual(component_all, component_none)
+        self.assertLess(component_all, component_none)
+        self.assertNotEqual(hash(component_all), hash(component_none))
+
+    def test_version_range_sorting(self) -> None:
+        # version is compared before version_range, None sorts as greater than any string
+        expected_order = [1, 2, 0]
+        components = [
+            Component(name='test_component', is_external=True),
+            Component(name='test_component', is_external=True, version='1.0.0'),
+            Component(name='test_component', is_external=True, version_range='vers:all/*'),
+        ]
+        sorted_components = sorted(components)
+        expected_components = reorder(components, expected_order)
+        self.assertListEqual(sorted_components, expected_components)
+
     def test_nested_components_1(self) -> None:
         comp_b = Component(name='comp_b')
         comp_c = Component(name='comp_c')
diff --git a/tests/test_output_json.py b/tests/test_output_json.py
index b9340a4e..062f38cf 100644
--- a/tests/test_output_json.py
+++ b/tests/test_output_json.py
@@ -30,6 +30,7 @@
     InvalidOmniBorIdException,
     InvalidSwhidException,
     LicenseExpressionAlongWithOthersException,
+    MutuallyExclusivePropertiesException,
     UnknownComponentDependencyException,
 )
 from cyclonedx.exception.output import FormatNotSupportedException
@@ -93,6 +94,7 @@ def test_invalid(self, get_bom: Callable[[], Bom], sv: SchemaVersion) -> None:
             LicenseExpressionAlongWithOthersException,
             InvalidOmniBorIdException,
             InvalidSwhidException,
+            MutuallyExclusivePropertiesException,
             UnknownComponentDependencyException,
         )):
             return None  # expected
diff --git a/tests/test_output_xml.py b/tests/test_output_xml.py
index 6e887ded..2cb68585 100644
--- a/tests/test_output_xml.py
+++ b/tests/test_output_xml.py
@@ -29,6 +29,7 @@
     InvalidOmniBorIdException,
     InvalidSwhidException,
     LicenseExpressionAlongWithOthersException,
+    MutuallyExclusivePropertiesException,
     UnknownComponentDependencyException,
 )
 from cyclonedx.model.bom import Bom
@@ -81,6 +82,7 @@ def test_invalid(self, get_bom: Callable[[], Bom], sv: SchemaVersion) -> None:
             LicenseExpressionAlongWithOthersException,
             InvalidOmniBorIdException,
             InvalidSwhidException,
+            MutuallyExclusivePropertiesException,
             UnknownComponentDependencyException,
         )):
             return None  # expected