CVE-2025-66382
Modified Modified - Updated After Analysis
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.
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Meta Information
Published
2025-11-28
Last Modified
2026-06-02
Generated
2026-06-16
AI Q&A
2025-11-28
EPSS Evaluated
2026-06-15
NVD
CVE-2025-66382
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
libexpat_project libexpat to 2.7.3 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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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.
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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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