CVE-2022-22827 Integer overflow in n/a

High 8.8 Published 8 Jan 2022 Updated 14 Oct 2026

An integer overflow in the Expat XML parser library can lead to denial of service conditions for applications processing XML data.

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-2022-22827?

CVE-2022-22827 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

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

Weakness: CWE-190

Which versions are affected by CVE-2022-22827?

It affects 4 products.

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

How do I fix CVE-2022-22827?

Upgrade to a fixed version.

Is CVE-2022-22827 being exploited?

There is no known exploitation of CVE-2022-22827 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as ALPINE-CVE-2022-22827, AZL-7161, CLEANSTART-2026-CW97355, DEBIAN-CVE-2022-22827, GHSA-97f8-83vc-c97q, JLSEC-2025-49 and 1 more.