CVE-2026-30080 Security feature bypass in n/a

High 7.5 Published 8 Apr 2026 Updated 9 Apr 2026

OpenAirInterface allows integrity protection downgrade, enabling replay attacks against 5G mobile networks.

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-2026-30080?

CVE-2026-30080 is a high-severity vulnerability in n/a, published on 8 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

OpenAirInterface v2.2.0 accepts Security Mode Complete without any integrity protection. Configuration has supported integrity NIA1 and NIA2. But if an UE sends initial registration request with only security capability IA0, OpenAirInterface accepts and proceeds. This downgrade security context can lead to the possibility of replay attack.

Weakness: CWE-294

Which versions are affected by CVE-2026-30080?

It affects 1 product.

Products include Openairinterface Oai-Cn5g-Amf.

How do I fix CVE-2026-30080?

No fix has been published for CVE-2026-30080 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-30080 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30080 exists.

Sources

Also known as GHSA-ppqh-5vmg-4xr4.