CVE-2025-51495

7.5 highEPSS 0.4%

High (7.5) in cesanta mongoose. EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-31)
CWE: CWE-190
Published: 2025-09-29
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

cesanta:mongoose

References

https://github.com/cainiao159357/CVE-2025-51495
https://github.com/cesanta/mongoose
https://github.com/cesanta/mongoose/pull/3131

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