CVE-2022-22825 Integer overflow in n/a

High 8.8 Published 8 Jan 2022 Updated 14 Oct 2026

An integer overflow in the Expat XML parser's lookup function can lead to denial of service, affecting applications using the library.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2022-22825?

CVE-2022-22825 is a high-severity vulnerability in Debian Debian Linux, published on 8 Jan 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

lookup in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

Weakness: CWE-190

Which versions are affected by CVE-2022-22825?

It affects 4 products.

Products include Debian Debian Linux, Libexpat Project Libexpat, Siemens Sinema Remote Connect Server, Tenable Nessus.

How do I fix CVE-2022-22825?

Upgrade to a fixed version.

Is CVE-2022-22825 being exploited?

There is no known exploitation of CVE-2022-22825 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as ALPINE-CVE-2022-22825, AZL-7159, CLEANSTART-2026-ON89098, DEBIAN-CVE-2022-22825, GHSA-2h26-9fpg-gcx8, JLSEC-2025-47 and 1 more.