CVE-2026-121969
mediumnetrek-client-cow through 3.3.3 contains a stack-based buffer overflow vulnerability in handleSMessage() in short.c that allows malicious servers to overflow a…
netrek-client-cow through 3.3.3 contains a stack-based buffer overflow vulnerability in handleSMessage() in short.c that allows malicious servers to overflow a 100-byte stack buffer by sending oversized SP_S_MESSAGE packets. A malicious Netrek server or man-in-the-middle on the plaintext TCP connection can send overlong or unterminated message bodies to write server-controlled bytes onto the stack and crash the client.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/quozl/netrek-client-cow disclosure@vulncheck.com
- https://github.com/quozl/netrek-client-cow/blob/3.3.3/short.c#L949 disclosure@vulncheck.com
- https://github.com/quozl/netrek-client-cow/commit/fb322e74abee3b0b76a9c5a31df6aab5585d3127 disclosure@vulncheck.com
- https://github.com/quozl/netrek-client-cow/issues/11 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/netrek-client-cow-through-3.3.3-stack-buffer-overflow... disclosure@vulncheck.com