CVE-2022-3116 Null dereference in Heimdal Software Kerberos

High 7.5 Published 27 Mar 2023 Updated 24 Feb 2025

An attacker can crash applications using the Heimdal Kerberos library by triggering a null pointer dereference via network access.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2022-3116?

CVE-2022-3116 is a high-severity vulnerability in Heimdal Software Kerberos, published on 27 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Heimdal Software Kerberos 5 implementation is vulnerable to a null pointer dereferance. An attacker with network access to an application that depends on the vulnerable code path can cause the application to crash.

Weakness: CWE-476

Which versions are affected by CVE-2022-3116?

It affects 1 product.

Products include Heimdal Project Heimdal.

How do I fix CVE-2022-3116?

Apply the vendor's patch.

Is CVE-2022-3116 being exploited?

There is no known exploitation of CVE-2022-3116 in the wild and no public exploit code.

Sources

Also known as AZL-43894, AZL-45258, GHSA-c662-3p6q-p5c7, MGASA-2022-0395, UBUNTU-CVE-2022-3116.