CVE-2022-23990 Integer overflow in n/a

What is CVE-2022-23990?

CVE-2022-23990 is a high-severity vulnerability in Debian Debian Linux, published on 26 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function.

Weakness: CWE-190

Which versions are affected by CVE-2022-23990?

It affects 6 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Libexpat Project Libexpat, Oracle Communications Metasolv Solution, Siemens Sinema Remote Connect Server, Tenable Nessus.

How do I fix CVE-2022-23990?

Upgrade to a fixed version.

Is CVE-2022-23990 being exploited?

There is no known exploitation of CVE-2022-23990 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as A-221256678, ALPINE-CVE-2022-23990, ASB-A-221256678, AZL-8334, CLEANSTART-2026-NB10448, DEBIAN-CVE-2022-23990 and 3 more.