libexpat up to 2.7.1 allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in libexpat up to 2.7.1. Affected by this issue is some unknown functionality. The manipulation leads to allocation of resources. This vulnerability is referenced as CVE-2025-59375. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in libexpat up to 2.7.1. This issue affects some unknown functionality. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. The summary by CVE is:

libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2025-59375 since 09/15/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 265182 (Linux Distros Unpatched Vulnerability : CVE-2025-59375), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.7.2 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (265182), EUVD (EUVD-2025-29148) and CERT Bund (WID-SEC-2025-2648). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • IBM AIX
  • IBM VIOS

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (MITRE): 🔒

CVSSv2info

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

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / 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: 265182
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-59375

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: libexpat 2.7.2
Patch: github.com

Timelineinfo

09/15/2025 Advisory disclosed
09/15/2025 +0 days CVE reserved
09/15/2025 +0 days VulDB entry created
11/20/2025 +66 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 1018
Status: Confirmed

CVE: CVE-2025-59375 (🔒)
GCVE (CVE): GCVE-0-2025-59375
GCVE (VulDB): GCVE-100-323885
EUVD: 🔒
CERT Bund: WID-SEC-2025-2648 - IBM AIX und VIOS: Mehrere Schwachstellen

Entryinfo

Created: 09/15/2025 07:14
Updated: 11/20/2025 14:39
Changes: 09/15/2025 07:14 (63), 09/15/2025 12:21 (1), 09/20/2025 13:58 (2), 11/20/2025 14:39 (7)
Complete: 🔍
Cache ID: 216::103

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