Is CVE-2022-25235 actively exploited?

CVE-2022-25235 has no public evidence of in-the-wild exploitation as of 2025-05-05.

What is the CVSS score for CVE-2022-25235?

CVE-2022-25235 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2022-25235?

Patch guidance is available from libexpat project security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2022-25235.

Fix CVE-2022-25235 - CRITICAL libexpat project libexpat

Q: Which products are affected by CVE-2022-25235?

9 products: libexpat project libexpat, debian debian linux, debian debian linux, fedoraproject fedora, fedoraproject fedora, and 4 more.

Description

xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-116 CWE-116

Metadata

Primary Vendor: LIBEXPAT_PROJECT
Published: 2/16/2022
Last Modified: 5/5/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

libexpat_project : libexpatdebian : debian_linuxdebian : debian_linuxfedoraproject : fedorafedoraproject : fedoraoracle : http_serveroracle : http_serveroracle : zfs_storage_appliance_kitsiemens : sinema_remote_connect_server

Remediation Guidance

Executive Summary

Cite this page

CVE-2022-25235. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2022-25235

View on NIST NVD

CVE-2022-25235 vulnerability