Libssh: null pointer dereference in libssh kex session id calculation
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.7epss 0.2%
exploitation probability
0.2%top 89% of all CVEs
observed exploitation
nono source reports it
A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
libsshRed Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat OpenShift Container Platform 4References
https://access.redhat.com/errata/RHSA-2026:18683https://access.redhat.com/security/cve/CVE-2025-8114https://bugzilla.redhat.com/show_bug.cgi?id=2383220https://git.libssh.org/projects/libssh.git/commit/?id=53ac23ded4cb2c5463f6c4cd1525331bd578812dhttps://git.libssh.org/projects/libssh.git/commit/?id=65f363c9https://www.libssh.org/security/advisories/CVE-2025-8114.txt