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CVE-2025-8114

Libssh: null pointer dereference in libssh kex session id calculation

Published: Jul 24, 2025Updated: May 19, 2026 Sources: CVE List NVD BDUCWE-476
NVD MITRE
4.7CVSSMEDIUM
EPSS Score
0.2%
Top 89.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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 Vector Breakdown

AV:LAC:HPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-476

Affected Products

Red Hat Enterprise Linux 9Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 10Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 6Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 7Red Hat
On-premOS
Operating Systems / linux-distro
red hatcommercialUSOperating Systemsaka red hat
and 23 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2026:18683
access.redhat.com
https://access.redhat.com/security/cve/CVE-2025-8114
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2383220
bugzilla.redhat.com
and 14 more references View all →

Timeline

Published
Jul 24, 2025
Last Updated
May 19, 2026

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