CVE-2025-49795

Description

A NULL pointer dereference vulnerability was found in libxml2 when processing XPath XML expressions. This flaw allows an attacker to craft a malicious XML input to libxml2, leading to a denial of service.

CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-825 CWE-825

References

Other References

https://access.redhat.com/errata/RHSA-2025:10630 https://access.redhat.com/errata/RHSA-2025:19020 https://access.redhat.com/errata/RHSA-2026:7519 https://access.redhat.com/security/cve/CVE-2025-49795 https://bugzilla.redhat.com/show_bug.cgi?id=2372379 https://gitlab.gnome.org/GNOME/libxml2/-/issues/932

Frequently Asked Questions

What is CVE-2025-49795? +

A NULL pointer dereference vulnerability was found in libxml2 when processing XPath XML expressions. This flaw allows an attacker to craft a malicious XML input to libxml2, leading to a denial of service. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-49795? +

CVE-2025-49795 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2025-49795? +

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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