Vulnerability Report

CVE-2025-46171

Title: Vbulletin Denial of Service (DoS)

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2025-46171.

CWE Category CWE-400

Published Date Jul 23, 2025

Modified Date Jul 05, 2026

Exploit Status Not Found

Score 5.4 CVSS v3.1

Exploit Probability (EPSS)

0.24%

Vulnerability Summary

CVE-2025-46171: vBulletin 3.8.7 is vulnerable to a denial-of-service condition via the misc.php?do=buddylist endpoint. If an authenticated user has a sufficiently large buddy list, processing the list can consume excessive memory, exhausting system resources and crashing the forum.

Impacted Vendors

jelsoft 1

vbulletin 1

Reference Links

http://vbulletin.com https://github.com/oiyl/CVE-2025-46171

CVSS v3.1

Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0

Severity MEDIUM

5.4

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2025-46171 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

July 05, 2026 MODIFIED

Vulnerability data updated via NVD.

July 28, 2025 MODIFIED

Vulnerability data or affected products updated.

July 28, 2025 MODIFIED

Vulnerability data updated via NVD.

July 23, 2025 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction REQUIRED

CVSS Vector String


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

Affected Stack

No specific products linked.