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CVE-2023-25135

CRITICAL

9.8

Description

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/3/2023

Last Modified3/26/2025

Sourcenvd

Honeypot Sightings0

Affected Products

vbulletin:vbulletin

Weaknesses (CWE)

CWE-502CWE-502

References

https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4473890-vbulletin-5-6-9-security-patch(cve@mitre.org)

https://www.ambionics.io/blog/vbulletin-unserializable-but-unreachable(cve@mitre.org)

https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4473890-vbulletin-5-6-9-security-patch(af854a3a-2127-422b-91ae-364da2661108)

https://www.ambionics.io/blog/vbulletin-unserializable-but-unreachable(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.