CVE-2026-71676 Memory corruption in n/a
A remote attacker can cause a denial of service in Open5GS by mutating the message type byte in a NAS PDU, triggering a buffer overflow.
- 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-2026-71676?
CVE-2026-71676 is a high-severity memory corruption vulnerability in n/a, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Buffer Overflow vulnerability in Open5GS v.2.7.0 allows a remote attacker to cause a denial of service via the NAS 5GS decoder chain, triggered when the message type byte of a NAS PDU is mutated
Weakness: CWE-122
Which versions are affected by CVE-2026-71676?
How do I fix CVE-2026-71676?
No fix has been published for CVE-2026-71676 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-2026-71676 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-71676 exists.
Sources
Also known as GHSA-g8r5-63w3-725c.