CVE-2026-60002

critical

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.)

References

https://www.openwall.com/lists/oss-security/2026/07/06/5

https://www.openssh.org/releasenotes.html#10.4p1

https://marc.info/?l=openssh-unix-dev&m=178333966933090&w=2

Details

Source: Mitre, NVD

Published: 2026-07-08

Updated: 2026-07-09

Risk Information

CVSS v2

Base Score: 9.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:P

Severity: High

CVSS v3

Base Score: 9.4

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Severity: Critical

EPSS

EPSS: 0.00252