Vulnerability in Red Hat Enterprise Linux 10
CVE-2026-55655
A flaw was found in OpenSSH. A local unprivileged attacker on a Linux client host can hijack client-side X11 forwarding connections. This is possible by pre-binding the preferred abstract X socket name when X11 forwarding is enabled and a…
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:N.
Affected products
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
Frequently asked questions
- What is CVE-2026-55655?
- CVE-2026-55655 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under CWE-923. CVSS score: 5.0/10. Published 2026-06-23.
- How severe is CVE-2026-55655?
- Medium severity. CVSS v3 base score is 5.0 out of 10.