What’s Vulnerable › Vulnerabilities

CVE-2025-49795: Libxml: null pointer dereference leads to denial of service (dos)

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-06-16 · updated 2026-10-12
• Weakness: CWE-825

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.

Affected products

• Red Hat Enterprise Linux 10: all versions — fixed in 0:2.12.5-7.el10_0
• Red Hat Hardened Images: all versions — fixed in 2.15.2-0.3.hum1
• xmlsoft libxml2: from 2.10.0 before 2.14.5 — fixed in 2.14.5

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 10 0:2.12.5-7.el10_0; Red Hat Hardened Images 2.15.2-0.3.hum1; xmlsoft libxml2 2.14.5. Check the vendor advisory for mitigations.

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
• https://cert-portal.siemens.com/productcert/html/ssa-253495.html

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