CVE-2026-30080 | BDVDB-2026-325656 Detail

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.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact high, availability impact none. Attack vector: network.

Weaknesses#

CWE-294 Authentication Bypass by Capture-replay

References#

https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-amf/-/issues/78

Exploit#

No public exploit known

History#

Version 12026-04-08Record published in the CVE List.
Version 22026-04-09Most recent update recorded in the CVE List.

Published

Published: 2026-04-08
Last modified: 2026-04-09

Vendor information

Vendor: Not stated
Product: Not stated

Score

7.5 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 18.1.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Authentication Issues

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

No version data in the source record.

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.5 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	High
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).