CVE-2026-121968: high-severity vulnerability in quozl netrek-client-cow
Netrek-client-cow through 3.3.3 Out-of-Bounds Read via SP_S_MESSAGE Packets
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.3%
Netrek-client-cow through 3.3.3 contains an out-of-bounds read vulnerability in short.c handleSMessage() that allows malicious servers to crash clients via an unchecked m_recpt index. Attackers controlling a Netrek server or intercepting the plaintext TCP connection can send SP_S_MESSAGE packets with m_recpt of 36 or more, reading past players[] and shipnos to deny service.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
quozl · netrek-client-cowRelated CVEs — quozl netrek-client-cow
In the same product, most dangerous first.
References
https://github.com/quozl/netrek-client-cowhttps://github.com/quozl/netrek-client-cow/blob/3.3.3/short.c#L942-L943https://github.com/quozl/netrek-client-cow/commit/fb322e74abee3b0b76a9c5a31df6aab5585d3127https://www.vulncheck.com/advisories/netrek-client-cow-through-3.3.3-out-of-bounds-read-via-sp-s-message-packets