HIGH 8.1 Microsoft
CVE-2026-56123
socat 1.8.0.0 - 1.8.1.1 Heap Buffer Overflow via SOCKS5 Reply Parser
Microsoft Security Update 2026-Jun: socat 1.8.0.0 - 1.8.1.1 Heap Buffer Overflow via SOCKS5 Reply Parser
Affected Products
- azl3 socat 1.7.4.4-2 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56123
- https://nvd.nist.gov/vuln/detail/CVE-2026-56123
This high severity vulnerability with a CVSS score of 8.1 was published on 2026-06-09 via Microsoft. Affected: azl3 socat 1.7.4.4-2 on Azure Linux 3.0.
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