CVE-2026-60002

Severity: critical (CVSS 9.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-08 · updated 2026-10-25
Weakness: CWE-416

Description

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.)

Affected products

OpenSSH: before 10.4 — fixed in 10.4

How to fix

Upgrade to a fixed version: OpenSSH 10.4. Check the vendor advisory for mitigations.

References

https://marc.info/?l=openssh-unix-dev&m=178333966933090&w=2
https://www.openssh.org/releasenotes.html#10.4p1
https://www.openwall.com/lists/oss-security/2026/07/06/5

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