CVE-2026-56123: socat 1.8.0.0 - 1.8.1.1 Heap Buffer Overflow via SOCKS5 Reply Parser

Overview

Severity
High (CVSS 8.1)
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Status
Not Exploited
Patch Tuesday
2026-Jun
Released
2026-06-27
EPSS Score
0.31% (percentile: 22.4%)

Affected Products (1)

Other

  • 17548-17084

Revision History

  • 2026-06-27: Information published.