CVE-2025-8114: libssh Null Dereference (CVSS 4.7)

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.

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CVSS v3.1 Score

4.7

MEDIUM

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

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
libssh	libssh	< 0.11.2

References

Other References

https://access.redhat.com/security/cve/CVE-2025-8114 https://bugzilla.redhat.com/show_bug.cgi?id=2383220 https://git.libssh.org/projects/libssh.git/commit/?id=53ac23ded4cb2c5463f6c4cd1525331bd578812d https://git.libssh.org/projects/libssh.git/commit/?id=65f363c9 https://www.libssh.org/security/advisories/CVE-2025-8114.txt

Frequently Asked Questions

What is CVE-2025-8114? +

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. It has a CVSS v3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2025-8114? +

CVE-2025-8114 has a CVSS v3.1 score of 4.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-8114? +

CVE-2025-8114 affects products from libssh, specifically: libssh. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-8114? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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