CVE-2025-8114
Libssh: null pointer dereference in libssh kex session id calculation
CVSS Score
4.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-476 |
| Published | Jul 24, 2025 |
| Last Updated | Jan 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat OpenShift Container Platform 4
All versions affected References
access.redhat.com: https://access.redhat.com/security/cve/CVE-2025-8114 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2383220 git.libssh.org: https://git.libssh.org/projects/libssh.git/commit/?id=53ac23ded4cb2c5463f6c4cd1525331bd578812d git.libssh.org: https://git.libssh.org/projects/libssh.git/commit/?id=65f363c9 libssh.org: https://www.libssh.org/security/advisories/CVE-2025-8114.txt
Credits
Red Hat would like to thank Jakub Jelen and Philippe Antoine for reporting this issue.