What is CVE-2026-30075?

CVE-2026-30075 is a high-severity vulnerability in Openairinterface Oai-Cn5g-Amf, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2026-04-08.

How severe is CVE-2026-30075?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Openairinterface Oai-Cn5g-Amf

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).

Vulnerability class: Buffer Overflow

EPSS: 0.004 (30.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Openairinterface Oai-cn5g-amf — versions 2.2.0
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

cve@mitre.org (Exploit, Third Party Advisory, Issue Tracking)
cve@mitre.org (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2026-30075?: CVE-2026-30075 is a high-severity vulnerability in Openairinterface Oai-Cn5g-Amf, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2026-04-08.
How severe is CVE-2026-30075?: High severity. CVSS v3 base score is 7.5 out of 10.