What is CVE-2026-106584?

CVE-2026-106584 is a low-severity vulnerability in OpenBSD OpenSSH, classified under Off-by-one Error. CVSS score: 2.5/10. Published 2026-10-06.

How severe is CVE-2026-106584?

Low severity. CVSS v3 base score is 2.5 out of 10.

Vulnerability in OpenBSD OpenSSH

CVE-2026-106584

In ssh-keygen in OpenSSH before 10.6, certificates could have incorrect expiration times because of Daylight Saving mishandling. There can be a slightly more severe effect on users in certain Antarctic locations.

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

CVSS v3 metric

CVSS v3 base score 2.5 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/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-193 — Off-by-one Error

References

www.openssh.org/releasenotes.html

Frequently asked questions

What is CVE-2026-106584?: CVE-2026-106584 is a low-severity vulnerability in OpenBSD OpenSSH, classified under Off-by-one Error. CVSS score: 2.5/10. Published 2026-10-06.
How severe is CVE-2026-106584?: Low severity. CVSS v3 base score is 2.5 out of 10.