7.5
HIGH CVSS 3.1
CVE-2025-59375
Apache Expat Large Allocation Vulnerability
Description

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

INFO

Published Date :

Sept. 15, 2025, 3:15 a.m.

Last Modified :

Oct. 17, 2025, 7:26 p.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2025-59375 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Libexpat_project libexpat
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH [email protected]
Solution
Update libexpat to a version that mitigates excessive memory allocation vulnerabilities.
  • Update libexpat to version 2.7.2 or later.
  • Apply vendor-provided security patches.
  • Monitor system memory usage.
Public PoC/Exploit Available at Github

CVE-2025-59375 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-59375.

URL Resource
https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74 Product
https://github.com/libexpat/libexpat/blob/R_2_7_2/expat/Changes Product
https://github.com/libexpat/libexpat/issues/1018 Exploit Issue Tracking
https://github.com/libexpat/libexpat/pull/1034 Issue Tracking
https://issues.oss-fuzz.com/issues/439133977 Exploit Issue Tracking
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-59375 is associated with the following CWEs:

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

This is an attempt to create an end-to-end DevSecOps lab for the OWASP Juice Shop, embedding security controls into the software development lifecycle with hands-on tooling.

Dockerfile Open Policy Agent Python

Updated: 3 weeks, 6 days ago
1 stars 0 fork 0 watcher
Born at : Sept. 21, 2025, 9:26 p.m. This repo has been linked 98 different CVEs too.

None

Dockerfile

Updated: 1 month, 1 week ago
0 stars 0 fork 0 watcher
Born at : Sept. 15, 2025, 1:14 p.m. This repo has been linked 30 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-59375 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-59375 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Oct. 17, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:* versions up to (excluding) 2.7.2
    Added Reference Type MITRE: https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74 Types: Product
    Added Reference Type MITRE: https://github.com/libexpat/libexpat/blob/R_2_7_2/expat/Changes Types: Product
    Added Reference Type MITRE: https://github.com/libexpat/libexpat/issues/1018 Types: Exploit, Issue Tracking
    Added Reference Type MITRE: https://github.com/libexpat/libexpat/pull/1034 Types: Issue Tracking
    Added Reference Type MITRE: https://issues.oss-fuzz.com/issues/439133977 Types: Exploit, Issue Tracking
  • CVE Modified by [email protected]

    Sep. 17, 2025

    Action Type Old Value New Value
    Added Reference https://github.com/libexpat/libexpat/blob/R_2_7_2/expat/Changes
  • New CVE Received by [email protected]

    Sep. 15, 2025

    Action Type Old Value New Value
    Added Description libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CWE CWE-770
    Added Reference https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74
    Added Reference https://github.com/libexpat/libexpat/issues/1018
    Added Reference https://github.com/libexpat/libexpat/pull/1034
    Added Reference https://issues.oss-fuzz.com/issues/439133977
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact