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.
Advisories
Source ID Title
EUVD EUVD EUVD-2025-31586 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 17 Oct 2025 02:15:00 +0900

Type Values Removed Values Added
CPEs cpe:2.3:a:cesanta:mongoose:*:*:*:*:*:*:*:*

Fri, 03 Oct 2025 09:15:00 +0900

Type Values Removed Values Added
Title mongoose: Integer Overflow in Mongoose's WebSocket component
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 02 Oct 2025 01:30:00 +0900

Type Values Removed Values Added
References

Wed, 01 Oct 2025 03:30:00 +0900

Type Values Removed Values Added
Weaknesses CWE-121

Wed, 01 Oct 2025 03:15:00 +0900

Type Values Removed Values Added
Weaknesses CWE-190

Tue, 30 Sep 2025 18:00:00 +0900

Type Values Removed Values Added
First Time appeared Cesanta
Cesanta mongoose
Vendors & Products Cesanta
Cesanta mongoose

Tue, 30 Sep 2025 05:15:00 +0900

Type Values Removed Values Added
Weaknesses CWE-121
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 30 Sep 2025 02:00:00 +0900

Type Values Removed Values Added
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.
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-10-01T15:21:21.511Z

Reserved: 2025-06-16T00:00:00.000Z

Link: CVE-2025-51495

cve-icon Vulnrichment

Updated: 2025-09-29T19:55:40.383Z

cve-icon NVD

Status : Analyzed

Published: 2025-09-29T17:15:31.153

Modified: 2025-10-16T17:00:47.237

Link: CVE-2025-51495

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-09-29T00:00:00Z

Links: CVE-2025-51495 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-09-30T17:48:25Z

Weaknesses