How severe is CVE-2026-30079?

CVE-2026-30079 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-30079 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30079?

CVE-2026-30079 affects Openairinterface Oai-cn5g-amf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30079?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-30079 have an EU (EUVD) identifier?

Yes. CVE-2026-30079 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19642.

When was CVE-2026-30079 published?

CVE-2026-30079 was published on 2026-04-07 and last updated on 2026-06-17.

CVE-2026-30079

CVE-2026-30079 is a critical-severity vulnerability in Openairinterface Oai-cn5g-amf with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-288.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19642
Weakness: CWE-288
Affected product: Openairinterface Oai-cn5g-amf
Published: 2026-04-07
Last modified: 2026-06-17

Description

In OpenAirInterface V2.2.0 AMF, Out of sequence messages causes incorrect state transition during UE registration procedure. This allows authentication to be bypassed completely. If a SecurityModeComplete message is sent after InitialUERegistration, a registration reject is received followed by a registration accept! This leads the UE to be registered without proper authentication.

Frequently asked questions

What is CVE-2026-30079?: In OpenAirInterface V2.2.0 AMF, Out of sequence messages causes incorrect state transition during UE registration procedure. This allows authentication to be bypassed completely. If a SecurityModeComplete message is sent after InitialUERegistration, a registration reject is received followed by a registration accept! This leads the UE to be registered without proper authentication.
How severe is CVE-2026-30079?: CVE-2026-30079 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-30079 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30079?: CVE-2026-30079 affects Openairinterface Oai-cn5g-amf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30079?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-30079 have an EU (EUVD) identifier?: Yes. CVE-2026-30079 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19642.
When was CVE-2026-30079 published?: CVE-2026-30079 was published on 2026-04-07 and last updated on 2026-06-17.

References

https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-amf/-/issues/77

Affected products (1)

cpe:2.3:a:openairinterface:oai-cn5g-amf:2.2.0:*:*:*:*:*:*:*

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