CVE-2025-49796

Libxml: type confusion leads to denial of service (dos)

State: Published
Severity: 9.1 Critical
Published: Jun 16, 2025
Updated: Oct 8, 2026
Reserved: Jun 10, 2025

Description

A vulnerability was found in libxml2. Processing certain sch:name elements from the input XML file can trigger a memory corruption issue. This flaw allows an attacker to craft a malicious XML input file that can lead libxml to crash, resulting in a denial of service or other possible undefined behavior due to sensitive data being corrupted in memory.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H	redhat

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
libxml2	before 2.15.0Affected
Red Hat Enterprise Linux 10Red Hat	0:2.12.5-7.el10_0 and laterNot affected
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat	0:2.9.1-6.el7_9.10 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	0:2.9.7-21.el8_10.1 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	0:2.9.7-21.el8_10.1 and laterNot affected
Red Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat	0:2.9.7-9.el8_2.3 and laterNot affected
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat	0:2.9.7-9.el8_4.6 and laterNot affected
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat	0:2.9.7-9.el8_4.6 and laterNot affected
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat	0:2.9.7-13.el8_6.10 and laterNot affected
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat	0:2.9.7-13.el8_6.10 and laterNot affected
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat	0:2.9.7-13.el8_6.10 and laterNot affected
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat	0:2.9.7-16.el8_8.9 and laterNot affected
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat	0:2.9.7-16.el8_8.9 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:2.9.13-10.el9_6 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:2.9.13-10.el9_6 and laterNot affected
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat	0:2.9.13-1.el9_0.5 and laterNot affected
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat	0:2.9.13-3.el9_2.7 and laterNot affected
Red Hat Enterprise Linux 9.4 Extended Update SupportRed Hat	0:2.9.13-10.el9_4 and laterNot affected
Red Hat JBoss Core Services 2.4.62.SP2Red Hat
Red Hat OpenShift Container Platform 4.12Red Hat	412.86.202510291903-0 and laterNot affected
Red Hat OpenShift Container Platform 4.13Red Hat	413.92.202510150118-0 and laterNot affected
Red Hat OpenShift Container Platform 4.14Red Hat	414.92.202510211419-0 and laterNot affected
Red Hat OpenShift Container Platform 4.15Red Hat	415.92.202609140326-0 and laterNot affected
Red Hat OpenShift Container Platform 4.16Red Hat	416.94.202609011112-0 and laterNot affected
Red Hat OpenShift Container Platform 4.17Red Hat	417.94.202510112152-0 and laterNot affected
Red Hat OpenShift Container Platform 4.18Red Hat	418.94.202510230424-0 and laterNot affected
Red Hat OpenShift Container Platform 4.19Red Hat	4.19.9.6.202510140714-0 and laterNot affected
Red Hat OpenShift Container Platform 4.20Red Hat	4.20.9.6.202509251656-0 and laterNot affected
Red Hat Web Terminal 1.11 on RHEL 9Red Hat	1.11-19 and laterNot affected
Red Hat Web Terminal 1.11 on RHEL 9Red Hat	1.11-8 and laterNot affected
Red Hat Web Terminal 1.12 on RHEL 9Red Hat	1.12-4 and laterNot affected
RHOSS-1.36-RHEL-8Red Hat	1.36.0-11 and laterNot affected
RHOSS-1.36-RHEL-8Red Hat	1.36.0-11 and laterNot affected
RHOSS-1.36-RHEL-8Red Hat	1.36.0-11 and laterNot affected
RHOSS-1.36-RHEL-8Red Hat	1.36.0-10 and laterNot affected
RHOSS-1.36-RHEL-8Red Hat	1.36.0-10 and laterNot affected
RHOSS-1.36-RHEL-8Red Hat	1.36.0-4 and laterNot affected
RHOSS-1.36-RHEL-8Red Hat	1.36.0-9 and laterNot affected
RHOSS-1.36-RHEL-8Red Hat	1.36.0-12 and laterNot affected
RHOSS-1.36-RHEL-8Red Hat	1.36.0-18 and laterNot affected
RHOSS-1.36-RHEL-8Red Hat	1.36.0-11 and laterNot affected
RHOSS-1.36-RHEL-8Red Hat	1.36.0-7 and laterNot affected
cert-manager operator for Red Hat OpenShift 1.16Red Hat	v1.16.5-1760515757 and laterNot affected
OpenShift File Integrity Operator - FIO 1Red Hat	v1.3 and laterNot affected
Red Hat Discovery 2Red Hat	2.0.1-1754478727 and laterNot affected
Red Hat Hardened ImagesRed Hat	2.15.2-0.3.hum1 and laterNot affected
Red Hat Insights proxy 1.5Red Hat	1.5.5-1754504343 and laterNot affected
Red Hat Enterprise Linux 6Red Hat

References

RHSA-2025:10630vendor-advisory
RHSA-2025:10698vendor-advisory
RHSA-2025:10699vendor-advisory
RHSA-2025:11580vendor-advisory
RHSA-2025:12098vendor-advisory
RHSA-2025:12099vendor-advisory
RHSA-2025:12199vendor-advisory
RHSA-2025:12237vendor-advisory
RHSA-2025:12239vendor-advisory
RHSA-2025:12240vendor-advisory
RHSA-2025:12241vendor-advisory
RHSA-2025:13267vendor-advisory
RHSA-2025:13335vendor-advisory
RHSA-2025:15397vendor-advisory
RHSA-2025:15827vendor-advisory
RHSA-2025:15828vendor-advisory
RHSA-2025:18217vendor-advisory
RHSA-2025:18218vendor-advisory
RHSA-2025:18219vendor-advisory
RHSA-2025:18240vendor-advisory
RHSA-2025:19020vendor-advisory
RHSA-2025:19041vendor-advisory
RHSA-2025:19046vendor-advisory
RHSA-2025:19894vendor-advisory
RHSA-2025:21913vendor-advisory
RHSA-2026:0934vendor-advisory
RHSA-2026:62549vendor-advisory
RHSA-2026:67857vendor-advisory
RHSA-2026:7519vendor-advisory
https://access.redhat.com/security/cve/CVE-2025-49796vdb-entry
RHBZ#2372385issue-tracking
https://gitlab.gnome.org/GNOME/libxml2/-/issues/933
https://lists.debian.org/debian-lts-announce/2025/07/msg00014.html
https://cert-portal.siemens.com/productcert/html/ssa-577017.html
https://cert-portal.siemens.com/productcert/html/ssa-253495.html

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.