CVE-2024-45491

9.8 CRITICAL

Published: August 30, 2024 Modified: November 04, 2025

Description

An issue was discovered in libexpat before 2.6.3. dtdCopy in xmlparse.c can have an integer overflow for nDefaultAtts on 32-bit platforms (where UINT_MAX equals SIZE_MAX).

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://github.com/libexpat/libexpat/issues/888

Source: cve@mitre.org

Issue Tracking

https://github.com/libexpat/libexpat/pull/891

Source: cve@mitre.org

Patch

https://lists.debian.org/debian-lts-announce/2024/09/msg00036.html

Source: af854a3a-2127-422b-91ae-364da2661108

https://security.netapp.com/advisory/ntap-20241018-0003/

Source: af854a3a-2127-422b-91ae-364da2661108

4 reference(s) from NVD

Quick Stats

CVSS v3 Score

9.8 / 10.0

EPSS (Exploit Probability)

0.3%

52th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-190 CWE-190

Affected Vendors

libexpat_project

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