How severe is CVE-2026-30075?

CVE-2026-30075 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-30075 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30075?

CVE-2026-30075 affects Openairinterface Oai-cn5g-amf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30075?

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

Does CVE-2026-30075 have an EU (EUVD) identifier?

Yes. CVE-2026-30075 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20509.

When was CVE-2026-30075 published?

CVE-2026-30075 was published on 2026-04-08 and last updated on 2026-06-17.

CVE-2026-30075

CVE-2026-30075 is a high-severity vulnerability in Openairinterface Oai-cn5g-amf with a CVSS 3.x base score of 7.5. 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-20509
Weakness: CWE-120
Affected product: Openairinterface Oai-cn5g-amf
Published: 2026-04-08
Last modified: 2026-06-17

Description

OpenAirInterface Version 2.2.0 has a Buffer Overflow vulnerability in processing UplinkNASTransport containing Authentication Response containing a NAS PDU with oversize response (For example 100 byte). The response is decoded by AMF and passed to the AUSF component for verification. AUSF crashes on receiving this oversize response. This can prohibit users from further registration and verification and can cause Denial of Services (DoS).

Frequently asked questions

What is CVE-2026-30075?: OpenAirInterface Version 2.2.0 has a Buffer Overflow vulnerability in processing UplinkNASTransport containing Authentication Response containing a NAS PDU with oversize response (For example 100 byte). The response is decoded by AMF and passed to the AUSF component for verification. AUSF crashes on receiving this oversize response. This can prohibit users from further registration and verification and can cause Denial of Services (DoS).
How severe is CVE-2026-30075?: CVE-2026-30075 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-30075 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30075?: CVE-2026-30075 affects Openairinterface Oai-cn5g-amf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30075?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-30075 have an EU (EUVD) identifier?: Yes. CVE-2026-30075 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20509.
When was CVE-2026-30075 published?: CVE-2026-30075 was published on 2026-04-08 and last updated on 2026-06-17.

References

Affected products (1)

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

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