CVE-2025-49795
highA NULL pointer dereference vulnerability was found in libxml2 when processing XPath XML expressions.
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
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2025-06-16 16:15
Modified: 2026-11-04 22:17
NVD status: Deferred
Last synced 4 hours ago
Verified against the source API 2026-11-04 22:37 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://access.redhat.com/errata/RHSA-2025:10630 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:19020 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:7519 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2025-49795 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2372379 secalert@redhat.com
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/932 secalert@redhat.com
- https://cert-portal.siemens.com/productcert/html/ssa-253495.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Data sources
NVD CVE API 2.0 — fetched 2026-11-04 22:37 UTC · record ↗