CVE-2025-51495

Published: Sep 29, 2025Modified: Oct 16, 2025

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

An integer overflow vulnerability exists in the WebSocket component of Mongoose 7.5 thru 7.17. By sending a specially crafted WebSocket request, an attacker can cause the application to crash. If downstream vendors integrate this component improperly, the issue may lead to a buffer overflow.

Affected (1)

Products: Cesanta: Mongoose

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Cesanta Mongoose	From 7.5 to 7.17

Related CWEs

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (3)

https://github.com/cainiao159357/CVE-2025-51495

Source: cve@mitre.org

Exploit

https://github.com/cesanta/mongoose

Source: cve@mitre.org

Product

https://github.com/cesanta/mongoose/pull/3131

Source: cve@mitre.org

Issue TrackingPatch

Timeline

No history available yet.