Description
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.
Published: 2026-11-04
Score: 7.1 High
EPSS: n/a
KEV: No
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Remediation

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Advisories

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History

Wed, 04 Nov 2026 20:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Netrek-client-cow through 3.3.3 Out-of-Bounds Read via SP_S_MESSAGE Packets
Weaknesses CWE-129
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 7.1, 'vector': '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'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-04T20:36:46.892Z

Reserved: 2026-11-04T12:48:39.813Z

Link: CVE-2026-121968

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-04T21:18:06.670

Modified: 2026-11-04T21:18:06.670

Link: CVE-2026-121968

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses