PT-2025-25521 · Libxml2+3 · Libxml2+3

Nikita Sveshnikov · Published 2025-01-01 · Updated 2025-11-09 · CVE-2025-49795

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions libxml2 (affected versions not specified)

Description A NULL pointer dereference issue was discovered in libxml2 when processing XPath XML expressions. This allows an attacker to create malicious XML input, resulting in a denial of service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-825

CWE-476

CWE-690

Related Identifiers

ALSA-2025:10630

AZL-64098

AZL-64121

BDU:2025-08977

CVE-2025-49795

ECHO-44C5-A0A5-783A

GHSA-353F-X4GH-CQQ8

MGASA-2025-0269

OESA-2025-1768

OESA-2025-1769

OESA-2025-1770

OPENSUSE-SU-2025:15321-1

RHSA-2025:10630

RHSA-2026:7519

SUSE-SU-2025:02260-1

SUSE-SU-2025:02314-1

SUSE-SU-2025:20564-1

SUSE-SU-2025:20607-1

SUSE-SU-2025_02260-1

SUSE-SU-2025_02314-1

Affected Products

Debian

Ibm Aix

Suse

Libxml2

References · 85

• https://osv.dev/vulnerability/openSUSE-SU-2025:15321-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-6021 · Security Note
• https://access.redhat.com/errata/RHSA-2026:7519 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-49795 · Security Note
• https://cve.org/CVERecord?id=CVE-2025-49795 · Security Note
• https://errata.almalinux.org/10/ALSA-2025-10630.html · Vendor Advisory
• https://osv.dev/vulnerability/AZL-64098 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-49795 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:02314-1 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-64121 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-49795 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2025:10630 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2025-1770 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2025-0269 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/722069 · Security Note