Critical severity · published Jul 8, 2026
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
9.4
CVSS
0.3%
EPSS
No
On KEV
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.)
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
OpenSSH · OpenBSD
before 10.4 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-60002
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-60002
Release Notes
https://marc.info/?l=openssh-unix-dev&m=178333966933090&w=2
Release Notes
https://www.openssh.org/releasenotes.html#10.4p1
Mailing List
https://www.openwall.com/lists/oss-security/2026/07/06/5
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