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CVE-2026-60002: ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange. (This outcome occurs only on the client side.)

highCVSS 7.7CVE-2026-60002

CSIRTS triage

vendor: OpenSSHproduct: sshOtheraffected: before 10.4
What
ssh can have a use-after-free when a server changes its host key during a key re-exchange.
Who is affected
Deployments of OpenSSH ssh before version 10.4 are affected.
Urgency
Remediation is urgent due to the high severity and potential for exploitation.
Action
Upgrade OpenSSH to version 10.4 or later.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 7.7
Published
2026-07-02
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-60002

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-2026-60002coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for ssh in OpenSSH

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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