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.

LowVendor CVSS 2.5 / 10 1 CVE Published Oct 8, 2026 at 1:14 AM UTC

Summary

Mariner

Release Notes

Oct 8, 2026 at 1:14 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Oct 12, 2026 at 10:25 AM UTC
Added to SecurityAlert
We collected the advisory from the official source.
Oct 21, 2026 at 1:15 AM UTC
Confirmed at the source
Our collector saw this advisory during a later source check.

Details collected from Microsoft Security Response Center.

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