CVE-2022-22822 Integer overflow in n/a

Critical 9.8 Published 8 Jan 2022 Updated 14 Oct 2026

An integer overflow in the Expat XML parser's addBinding 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: Not needed
Fix: Available

What is CVE-2022-22822?

CVE-2022-22822 is a critical vulnerability in Debian Debian Linux, published on 8 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

Weakness: CWE-190

Which versions are affected by CVE-2022-22822?

It affects 4 products.

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

How do I fix CVE-2022-22822?

Upgrade to a fixed version.

Is CVE-2022-22822 being exploited?

There is no known exploitation of CVE-2022-22822 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

All Debian Debian Linux vulnerabilities

Sources

Also known as A-219942275, ALPINE-CVE-2022-22822, ASB-A-219942275, AZL-7156, CLEANSTART-2026-PK56456, DEBIAN-CVE-2022-22822 and 3 more.