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.)
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 9.4 · openbsdNVD modified 2026-10-25 20:10
Affected (CPE criteria) 1
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
References 3
- https://marc.info/?l=openssh-unix-dev&m=178333966933090&w=2 Release Notes
- https://www.openssh.org/releasenotes.html#10.4p1 Release Notes
- https://www.openwall.com/lists/oss-security/2026/07/06/5 Mailing List, Release Notes