CVE-2025-49794

CRITICAL 9.1

Libxml: heap use after free (uaf) leads to denial of service (dos)

CVSS Score

9.1

EPSS Score

0.4%

EPSS Percentile

63th

A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the <sch:name path="..."/> schema elements. This flaw allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the program's crash using libxml or other possible undefined behaviors.

CWE	CWE-825
Published	Jun 16, 2025
Last Updated	Apr 14, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Affected Versions

Red Hat / Red Hat Enterprise Linux 10

All versions affected

Red Hat / Red Hat Enterprise Linux 7 Extended Lifecycle Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8

All versions affected

Red Hat / Red Hat Enterprise Linux 8

All versions affected

Red Hat / Red Hat Enterprise Linux 8.2 Advanced Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

All versions affected

Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8.6 Telecommunications Update Service

All versions affected

Red Hat / Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Service

All versions affected

Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

Red Hat / Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 9.4 Extended Update Support

All versions affected

Red Hat / Red Hat JBoss Core Services 2.4.62.SP2

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.12

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.13

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.14

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.17

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.18

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.19

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.20

All versions affected

Red Hat / Red Hat Web Terminal 1.11 on RHEL 9

All versions affected

Red Hat / Red Hat Web Terminal 1.11 on RHEL 9

All versions affected

Red Hat / Red Hat Web Terminal 1.12 on RHEL 9

All versions affected

Red Hat / RHOSS-1.36-RHEL-8

All versions affected

Red Hat / RHOSS-1.36-RHEL-8

All versions affected

Red Hat / RHOSS-1.36-RHEL-8

All versions affected

Red Hat / RHOSS-1.36-RHEL-8

All versions affected

Red Hat / RHOSS-1.36-RHEL-8

All versions affected

Red Hat / RHOSS-1.36-RHEL-8

All versions affected

Red Hat / RHOSS-1.36-RHEL-8

All versions affected

Red Hat / RHOSS-1.36-RHEL-8

All versions affected

Red Hat / RHOSS-1.36-RHEL-8

All versions affected

Red Hat / RHOSS-1.36-RHEL-8

All versions affected

Red Hat / cert-manager operator for Red Hat OpenShift 1.16

All versions affected

Red Hat / File Integrity Operator 1

All versions affected

Red Hat / Red Hat Insights proxy 1.5

All versions affected

Red Hat / Red Hat Enterprise Linux 6

All versions affected

Red Hat / Red Hat Hardened Images

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗