OpenAirInterface CN5G AMF<=v2.1.9 has a buffer overflow vulnerability in processing NAS…
Priority HIGH 72CWE-121Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.
Summary
OpenAirInterface CN5G AMF<=v2.1.9 has a buffer overflow vulnerability in processing NAS messages. Unauthorized remote attackers can launch a denial-of-service attack and potentially execute malicious code by accessing port N1 and sending an imsi string longer than 1000 to AMF.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00378 31st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openairinterface:oai-cn5g-amf:*:*:*:*:*:*:*:* | up to 2.1.9 | Vulnerable | Openairinterface |
- cpe:2.3:a:openairinterface:oai-cn5g-amf:*:*:*:*:*:*:*:* Versions up to 2.1.9 Vulnerable ·Openairinterface
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-65805
- 2026-10-03 Alias added: GHSA-rqwq-xmxw-556r
References
More Openairinterface Oai-cn5g-amf vulnerabilities
- TI-2026-23446 OpenAirInterface v2.2.0 accepts Security Mode Complete without any integrity protection. CVSS 3.1HIGH 7.5
- TI-2026-23444 OpenAirInterface V2.2.0 AMF crashes when it receives an NGAP message with invalid… CVSS 3.1HIGH 7.5
- TI-2026-23442 OpenAirInterface Version 2.2.0 has a Buffer Overflow vulnerability in processing… CVSS 3.1HIGH 7.5
- TI-2025-41054 OpenAirInterface CN5G AMF<=v2.0.1 There is a logical error when processing JSON format… CVSS 3.1HIGH 7.5
- TI-2026-23445 In OpenAirInterface V2.2.0 AMF, Out of sequence messages causes incorrect state… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-65805 · CVE Program
- CVE-2025-65805 · NVD
- FIRST EPSS
- GHSA-rqwq-xmxw-556r · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences