CVE-2026-55655: Openssh: local mitm of x11 forwarding via abstract unix socket pre-binding in red hat enterprise linux openssh client versions

Overview

Severity

Medium (CVSS 5)

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:N

Exploit Status

Not Exploited

Patch Tuesday

2026-Jun

Released

2026-06-27

Last Updated

2026-06-28

EPSS Score

0.08% (percentile: 0.3%)

Affected Products (2)

Other

• 21261-17084
• 21499-17084

Revision History

• 2026-06-27: Information published.
• 2026-06-28: Information published.