Is CVE-2025-66382 actively exploited?

CVE-2025-66382 has no public evidence of in-the-wild exploitation as of 2025-12-19.

What is the CVSS score for CVE-2025-66382?

CVE-2025-66382 has a CVSS score of 2.9 (LOW severity). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.

How do I patch CVE-2025-66382?

Patch guidance is available from libexpat project security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-66382.

Which products are affected by CVE-2025-66382?

1 product: libexpat project libexpat.

CVE-2025-66382 - remediation guidance & executive summary

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 Metrics

Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector: local
Complexity: high
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: low
Weaknesses: CWE-407

Metadata

Primary Vendor: LIBEXPAT_PROJECT
Published: 11/28/2025
Last Modified: 12/19/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

libexpat_project : libexpat

Remediation Guidance

Executive Summary

Cite this page

CVE-2025-66382. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2025-66382

View on NIST NVD

CVE-2025-66382 vulnerability