CVE-2025-51495: Integer Overflow

Published Sep 29, 2025
·
Updated

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 Software

2 affected components
Mongoose Mongoose>=7.5<=7.17
Cesanta Mongoose>=7.5<=7.17

Event History

Sep 29, 2025
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·05:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2025-51495?

CVE-2025-51495 is classified as a critical severity vulnerability due to its potential to crash applications.

2

How do I fix CVE-2025-51495?

To fix CVE-2025-51495, update Mongoose to a version higher than 7.17 or apply patches provided by the vendor.

3

What versions of Mongoose are affected by CVE-2025-51495?

CVE-2025-51495 affects Mongoose versions 7.5 through 7.17.

4

What type of attack is associated with CVE-2025-51495?

CVE-2025-51495 is associated with an integer overflow attack that can lead to application crashes.

5

Can CVE-2025-51495 lead to a buffer overflow?

Yes, if downstream vendors integrate Mongoose improperly, CVE-2025-51495 may lead to a buffer overflow.

Contact

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