CVE-2023-25135

vBulletin before 5.6.9 PL1 allows an unauthenticated remote attacker to execute arbitrary code via a crafted HTTP request that triggers deserialization. This occurs because verify_serialized checks that a value is serialized by calling unserialize and then checking for errors. The fixed versions are 5.6.7 PL1, 5.6.8 PL1, and 5.6.9 PL1.

CVSS v3.0 9.8 CRITICAL

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4473890-vbulletin-5-6-9-security-patch	Release Notes Vendor Advisory
https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4473890-vbulletin-5-6-9-security-patch	Release Notes Vendor Advisory
https://www.ambionics.io/blog/vbulletin-unserializable-but-unreachable	Exploit Technical Description Third Party Advisory
https://www.ambionics.io/blog/vbulletin-unserializable-but-unreachable	Exploit Technical Description Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:vbulletin:vbulletin:5.6.8:-::::::
	cpe:2.3:a:vbulletin:vbulletin:5.6.9:-::::::
	cpe:2.3:a:vbulletin:vbulletin:5.6.7:-::::::

History

26 Mar 2025, 15:15

Type	Values Removed	Values Added
References	~~(MISC) https://www.ambionics.io/blog/vbulletin-unserializable-but-unreachable - Exploit, Technical Description, Third Party Advisory~~	() https://www.ambionics.io/blog/vbulletin-unserializable-but-unreachable - Exploit, Technical Description, Third Party Advisory
References	~~(MISC) https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4473890-vbulletin-5-6-9-security-patch - Release Notes, Vendor Advisory~~	() https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4473890-vbulletin-5-6-9-security-patch - Release Notes, Vendor Advisory

Information

Published : 2023-02-03 05:15

Updated : 2025-03-26 15:15

NVD link : CVE-2023-25135

Mitre link : CVE-2023-25135

JSON object : View

Products Affected

vbulletin

vbulletin

CWE

CWE-502

Deserialization of Untrusted Data

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