CVE-2026-82587 Open5GS AMF namf-handler.c amf_namf_comm_decode_ue_mm_context_list memory corruption
Remote attackers can trigger memory corruption in Open5GS AMF via crafted UE MM context lists, potentially leading to code execution 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-2026-82587?
CVE-2026-82587 is a medium-severity memory corruption vulnerability in Open5GS, published on 30 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was determined in Open5GS up to 2.7.7. This vulnerability affects the function amf_namf_comm_decode_ue_mm_context_list of the file src/amf/namf-handler.c of the component AMF. This manipulation of the argument ueContext.mmContextList[*].allowedNssai causes memory corruption. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version 2.8.0 is able to resolve this issue. Patch name: abf8a836564b966b5141110fc25ed413c4f17522. It is recommended to upgrade the affected component.
Weakness: CWE-119
Which versions are affected by CVE-2026-82587?
How do I fix CVE-2026-82587?
No fix has been published for CVE-2026-82587 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-2026-82587 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82587 exists.
Sources
Also known as GHSA-qm67-7h74-xjp2.