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CVE-2026-73281: In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys. This is caused by misinteraction between agent locking and the session-bind@openssh.com extension.

lowCVSS 3.5CVE-2026-73281

CSIRTS triage

What
SSH agent allows remote operations intended to be local-only due to session-bind extension mishandling.
Who is affected
Systems running OpenSSH versions before 10.5 with ssh-agent in use are affected.
Urgency
Low severity with CVSS 3.5; remediation can follow standard patch cycles.
Action
Upgrade to OpenSSH 10.5 or later.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
low — CVSS 3.5
Published
2026-08-11
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73281

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-73281coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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