Paper/Archive/CVE-2026-60002

CVE-2026-60002

OpenBSD OpenSSH — ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange.

EPSS 0.3%CVSS 9.4

critical.is priorityof 100

CVSS 9.4 (NVD)9.4 / 10 × 3028.2 Not in CISA KEV+300.0 EPSS percentile 22.7.227 × 204.5 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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

ProductAffectedFixed inSource

OpenSSH< 10.410.4CNA

Scores by source

NVD9.4CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

mitre (CNA)7.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refopenwall.com/lists/oss-security/2026/07/06/5 refmarc.info/?l=openssh-unix-dev&m=178333966933090&w=2 refopenssh.org/releasenotes.html#10.4p1