Review reviewHigh

CVE-2026-6732

Red Hat Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6

A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable.

CVSS: 7.5
EPSS: 0.63%
CISA KEV: Not listed
Published: 2026.04.24

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.63%

Technical severityCVSS 7.5

Vulnerability overview

Affected product and versions

Product: Red Hat Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6
Affected versions: >= 2.13.0 < 2.15.3, 4.0, 6.0, 7.0, 8.0, 9.0, 10.0, >= 4.1.0 < 4.1.1.30, 4.1.2.0, >= 7.2.5 < 7.2.5.12, >= 7.3.2 < 7.3.3.3, 7.3.4
Fixed versions: 2.15.3, 4.1.1.30, 7.2.5.12, 7.3.3.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Red Hat Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE: CWE-843