diff --git a/docs/development/test-vectors.rst b/docs/development/test-vectors.rst
index 84fe83d48756..bcb88f912f78 100644
--- a/docs/development/test-vectors.rst
+++ b/docs/development/test-vectors.rst
@@ -193,6 +193,12 @@ Custom asymmetric vectors
   an invalid version field.
 * ``asymmetric/PKCS8/unknown-oid.der`` - Contains a PKCS8 encoded DER with an
   unknown OID.
+* ``asymmetric/Traditional_OpenSSL_Serialization/rsa-wrong-version.pem`` - An
+  RSA key, encoded as a "traditional" ``RSA PRIVATE KEY`` PEM block, with an
+  invalid version number.
+* ``asymmetric/Traditional_OpenSSL_Serialization/dsa-wrong-version.pem`` - A
+  DSA key, encoded as a "traditional" ``DSA PRIVATE KEY`` PEM block, with an
+  invalid version number.
 
 
 Key exchange
diff --git a/tests/hazmat/primitives/test_serialization.py b/tests/hazmat/primitives/test_serialization.py
index 2c6a39cbc226..74a7955dd93d 100644
--- a/tests/hazmat/primitives/test_serialization.py
+++ b/tests/hazmat/primitives/test_serialization.py
@@ -1090,6 +1090,34 @@ def test_load_bad_encryption_oid_key(self, key_file, password, backend):
                 ),
             )
 
+    @pytest.mark.xfail()
+    def test_rsa_private_key_invalid_version(self):
+        data = load_vectors_from_file(
+            os.path.join(
+                "asymmetric",
+                "Traditional_OpenSSL_Serialization",
+                "rsa-wrong-version.pem",
+            ),
+            lambda f: f.read(),
+            mode="rb",
+        )
+        with pytest.raises(ValueError):
+            load_pem_private_key(data, password=None)
+
+    @pytest.mark.xfail()
+    def test_dsa_private_key_invalid_version(self):
+        data = load_vectors_from_file(
+            os.path.join(
+                "asymmetric",
+                "Traditional_OpenSSL_Serialization",
+                "dsa-wrong-version.pem",
+            ),
+            lambda f: f.read(),
+            mode="rb",
+        )
+        with pytest.raises(ValueError):
+            load_pem_private_key(data, password=None)
+
 
 class TestKeySerializationEncryptionTypes:
     def test_non_bytes_password(self):
diff --git a/vectors/cryptography_vectors/asymmetric/Traditional_OpenSSL_Serialization/dsa-wrong-version.pem b/vectors/cryptography_vectors/asymmetric/Traditional_OpenSSL_Serialization/dsa-wrong-version.pem
new file mode 100644
index 000000000000..bfc7f50afe7a
--- /dev/null
+++ b/vectors/cryptography_vectors/asymmetric/Traditional_OpenSSL_Serialization/dsa-wrong-version.pem
@@ -0,0 +1,12 @@
+-----BEGIN DSA PRIVATE KEY-----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+-----END DSA PRIVATE KEY-----
diff --git a/vectors/cryptography_vectors/asymmetric/Traditional_OpenSSL_Serialization/rsa-wrong-version.pem b/vectors/cryptography_vectors/asymmetric/Traditional_OpenSSL_Serialization/rsa-wrong-version.pem
new file mode 100644
index 000000000000..a50760d64295
--- /dev/null
+++ b/vectors/cryptography_vectors/asymmetric/Traditional_OpenSSL_Serialization/rsa-wrong-version.pem
@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----