What is CVE-2026-106553?

CVE-2026-106553 is a low-severity vulnerability in OpenBSD OpenSSH, classified under Incorrect Resource Transfer Between Spheres. CVSS score: 2.2/10. Published 2026-10-06.

How severe is CVE-2026-106553?

Low severity. CVSS v3 base score is 2.2 out of 10.

Vulnerability in OpenBSD OpenSSH

CVE-2026-106553

In sshd in OpenSSH before 10.6, credentials can incorrectly persist after failure of a GSSAPIAuthentication authentication attempt.

Published 2026-10-06 · last modified 2026-10-07.

CVSS v3 metric

CVSS v3 base score 2.2 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

OpenBSD OpenSSH

Weakness classification (CWE)

CWE-669 — Incorrect Resource Transfer Between Spheres

References

www.openssh.org/releasenotes.html

Frequently asked questions

What is CVE-2026-106553?: CVE-2026-106553 is a low-severity vulnerability in OpenBSD OpenSSH, classified under Incorrect Resource Transfer Between Spheres. CVSS score: 2.2/10. Published 2026-10-06.
How severe is CVE-2026-106553?: Low severity. CVSS v3 base score is 2.2 out of 10.