libxslt Attribute Type key atype use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in libxslt. The affected element is the function key of the component Attribute Type Handler. Such manipulation of the argument atype leads to use after free. This vulnerability is uniquely identified as CVE-2025-7425. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in libxslt (unknown version). Affected by this issue is the function key of the component Attribute Type Handler. The manipulation of the argument atype with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A flaw was found in libxslt where the attribute type, atype, flags are modified in a way that corrupts internal memory management. When XSLT functions, such as the key() process, result in tree fragments, this corruption prevents the proper cleanup of ID attributes. As a result, the system may access freed memory, causing crashes or enabling attackers to trigger heap corruption.

The advisory is shared for download at access.redhat.com. This vulnerability is handled as CVE-2025-7425 since 07/10/2025. The exploitation is known to be difficult. The attack needs to be approached locally. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 242029 (FreeBSD : libxslt -- unmaintained, with multiple unfixed vulnerabilities (b0a3466f-5efc-11f0-ae84-99047d0a6bcc)), 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 (242029), EUVD (EUVD-2025-20998) and CERT Bund (WID-SEC-2025-1732). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM App Connect Enterprise
  • IBM MQ
  • Dell Avamar
  • Red Hat OpenShift
  • Dell NetWorker

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.1

VulDB Base Score: 4.5
VulDB Temp Score: 4.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (redhat): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 242029
Nessus Name: FreeBSD : libxslt -- unmaintained, with multiple unfixed vulnerabilities (b0a3466f-5efc-11f0-ae84-99047d0a6bcc)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/10/2025 Advisory disclosed
07/10/2025 +0 days CVE reserved
07/10/2025 +0 days VulDB entry created
11/02/2025 +114 days VulDB entry last update

Sourcesinfo

Advisory: access.redhat.com
Status: Not defined

CVE: CVE-2025-7425 (🔒)
GCVE (CVE): GCVE-0-2025-7425
GCVE (VulDB): GCVE-100-315992
EUVD: 🔒
CERT Bund: WID-SEC-2025-1732 - Red Hat Enterprise Linux (libxslt): Schwachstelle ermöglicht Codeausführung

Entryinfo

Created: 07/10/2025 16:30
Updated: 11/02/2025 00:36
Changes: 07/10/2025 16:30 (62), 07/10/2025 18:35 (1), 07/13/2025 14:09 (2), 08/01/2025 02:56 (1), 08/08/2025 16:16 (7), 09/07/2025 22:54 (1), 09/14/2025 09:42 (1), 11/02/2025 00:36 (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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