libxml Schematron Schema Report xmlSchematronFormatReport null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in libxml. This impacts the function xmlSchematronFormatReport of the component Schematron Schema Report Handler. Executing a manipulation can lead to null pointer dereference. This vulnerability is handled as CVE-2025-49795. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in libxml (affected version unknown) and classified as problematic. This vulnerability affects the function xmlSchematronFormatReport of the component Schematron Schema Report Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

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.

The advisory is shared for download at bugzilla.redhat.com. This vulnerability was named CVE-2025-49795 since 06/10/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 241600 (RHEL 10 : libxml2 (RHSA-2025:10630)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (241600), EUVD (EUVD-2025-18416) and CERT Bund (WID-SEC-2025-1312). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • IBM VIOS
  • IBM AIX
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Open Source Arch Linux
  • IBM Power Hardware Management Console
  • Red Hat OpenShift
  • SUSE openSUSE
  • Hitachi Energy RTU500
  • IBM MQ
  • NetApp Data ONTAP
  • IBM TXSeries
  • Open Source libxml2
  • Tenable Security Nessus
  • IBM App Connect Enterprise
  • RealObjects PDFreactor
  • Open Source Fluentd

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 241600
Nessus Name: RHEL 10 : libxml2 (RHSA-2025:10630)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/10/2025 🔍
06/12/2025 +2 days 🔍
06/12/2025 +0 days 🔍
10/29/2025 +139 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2025-49795 (🔍)
GCVE (CVE): GCVE-0-2025-49795
GCVE (VulDB): GCVE-100-312376
EUVD: 🔍
CERT Bund: WID-SEC-2025-1312 - libxml2: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 06/12/2025 08:54
Updated: 10/29/2025 12:40
Changes: 06/12/2025 08:54 (50), 06/16/2025 19:51 (1), 07/09/2025 14:27 (13), 07/09/2025 18:03 (2), 08/09/2025 17:09 (7), 09/14/2025 06:07 (1), 10/29/2025 12:40 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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