CVE-2023-25135

CRITICAL EXPLOITED NUCLEI

Vbulletin - Insecure Deserialization

Title source: rule

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.

Exploits (1)

vulncheck_xdb WORKING POC

remote

https://github.com/ambionics/vbulletin-exploits

View Code ZIP pw:eip

Nuclei Templates (1)

vBulletin <= 5.6.9 - Pre-authentication Remote Code Execution

CRITICALVERIFIEDby iamnoooob,rootxharsh,pdresearch

Shodan:

http.component:"vBulletin" || http.html:"powered by vbulletin" || http.component:"vbulletin" || http.title:"powered by vbulletin" || cpe:"cpe:2.3:a:vbulletin:vbulletin"

FOFA: body="powered by vbulletin" || title="powered by vbulletin"

References (2)

[Release Notes, Vendor Advisory] https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4473890-vbulletin-5-6-9-security-patch

[Exploit, Technical Description, Third Party Advisory] https://www.ambionics.io/blog/vbulletin-unserializable-but-unreachable

Scores

CVSS v3 9.8

EPSS 0.9334

EPSS Percentile 99.8%

Attack Vector NETWORK

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

Exploitation Intel

VulnCheck KEV 2023-12-04

Classification

CWE

CWE-502

Status published

Affected Products (3)

vbulletin/vbulletin

Timeline

Published Feb 03, 2023

Tracked Since Feb 18, 2026