CVE-2022-25235

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 12.04% Top 10%
Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/libexpat/libexpat/pull/562 third party advisory patch
http://www.openwall.com/lists/oss-security/2022/02/19/1 third party advisory mailing list
https://www.debian.org/security/2022/dsa-5085 third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM/ vendor advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html third party advisory mailing list
https://www.oracle.com/security-alerts/cpuapr2022.html third party advisory patch
https://security.netapp.com/advisory/ntap-20220303-0008/ third party advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf third party advisory
https://security.gentoo.org/glsa/202209-24 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-25235?
CVE-2022-25235 has been scored as a critical severity vulnerability.
How to fix CVE-2022-25235?
To fix CVE-2022-25235, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-25235 being actively exploited in the wild?
It is possible that CVE-2022-25235 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~12% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.