CVE-2026-78157 Open5GS Rx AA-Request pcrf-rx-path.c pcrf_rx_aar_cb out-of-bounds
Remote attackers can trigger an out-of-bounds read in Open5GS via Rx AA-Request, potentially causing information disclosure or service disruption.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-78157?
CVE-2026-78157 is a medium-severity memory corruption vulnerability in Open5GS, published on 24 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was detected in Open5GS 2.8.0. This affects the function pcrf_rx_aar_cb of the file src/pcrf/pcrf-rx-path.c of the component Rx AA-Request Handler. Performing a manipulation results in out-of-bounds read. It is possible to initiate the attack remotely. The patch is named c18dc6938bf63cc7374315d3dca303d92066e746. To fix this issue, it is recommended to deploy a patch.
Which versions are affected by CVE-2026-78157?
How do I fix CVE-2026-78157?
No fix has been published for CVE-2026-78157 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-2026-78157 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-78157 exists.
Sources
Also known as GHSA-65jg-mq47-hgxf.