CVE-2026-30078 Denial of service in n/a

High 7.5 Published 6 Apr 2026 Updated 6 Apr 2026

Attackers can crash the OpenAirInterface AMF by sending malformed NGAP messages, disrupting 5G core network availability.

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-2026-30078?

CVE-2026-30078 is a high-severity denial of service vulnerability in n/a, published on 6 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 AMF crashes when it receives an NGAP message with invalid procedure code or invalid PDU-type. For example when the message specification requires InitiatingMessage but sent with successfulOutcome.

Weakness: CWE-20

Which versions are affected by CVE-2026-30078?

It affects 1 product.

Products include Openairinterface Oai-Cn5g-Amf.

How do I fix CVE-2026-30078?

No fix has been published for CVE-2026-30078 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-30078 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30078 exists.

Sources

Also known as CVE-2026-5664, GHSA-3cfx-9xg9-hh68.