BaseFortify

Publication date: 2025-11-28

Last updated on: 2026-06-02

Assigner: MITRE

Description

In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2025-11-28

Last Modified

2026-06-02

Generated

2026-07-06

AI Q&A

2025-11-28

EPSS Evaluated

2026-07-05

NVD

CVE-2025-66382

Affected Vendors & Products

Vendor	Product	Version / Range
libexpat_project	libexpat	to 2.7.3 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-407	An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.

Attack-Flow Graph

Executive Summary

This vulnerability in libexpat through version 2.7.3 involves processing a specially crafted file of about 2 MiB in size, which can cause the parser to spend dozens of seconds processing it.

Impact Analysis

The vulnerability can lead to a denial of service condition by causing significant delays (dozens of seconds) in processing certain crafted files, potentially impacting availability.

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