CVE-2026-93962 Kamailio CDP Diameter Receiver receiver.c shm_malloc heap-based overflow
Remote attackers can trigger a heap-based buffer overflow in Kamailio's CDP Diameter Receiver, potentially leading to code execution or service disruption.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-93962?
CVE-2026-93962 is a medium-severity memory corruption vulnerability in Kamailio, published on 20 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A weakness has been identified in Kamailio up to 5.8.8/6.0.7/6.1.4/6.2.0-dev1. The impacted element is the function shm_malloc of the file src/modules/cdp/receiver.c of the component CDP Diameter Receiver. Executing a manipulation can lead to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 6.0.8 is sufficient to resolve this issue. This patch is called 38711a3e788de0130d48cb485578c482b57d9351/4f62235b6f477b649c5cc18b0c81b4e26c949b98/4f62235b6f477b649c5cc18b0c81b4e26c949b98. You should upgrade the affected component.
Which versions are affected by CVE-2026-93962?
How do I fix CVE-2026-93962?
No fix has been published for CVE-2026-93962 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-93962 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93962 exists.
Sources
Also known as DEBIAN-CVE-2026-93962, GHSA-3jw7-c3qg-43hw, UBUNTU-CVE-2026-93962.