How severe is CVE-2025-65805?

CVE-2025-65805 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-2025-65805 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-65805?

CVE-2025-65805 affects Openairinterface Oai-cn5g-amf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-65805?

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-2025-65805 have an EU (EUVD) identifier?

Yes. CVE-2025-65805 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1204.

When was CVE-2025-65805 published?

CVE-2025-65805 was published on 2026-01-07 and last updated on 2026-06-17.

CVE-2025-65805

CVE-2025-65805 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-121.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-1204
Weakness: CWE-121
Affected product: Openairinterface Oai-cn5g-amf
Published: 2026-01-07
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-65805?: 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.
How severe is CVE-2025-65805?: CVE-2025-65805 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-2025-65805 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-65805?: CVE-2025-65805 affects Openairinterface Oai-cn5g-amf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-65805?: 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-2025-65805 have an EU (EUVD) identifier?: Yes. CVE-2025-65805 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1204.
When was CVE-2025-65805 published?: CVE-2025-65805 was published on 2026-01-07 and last updated on 2026-06-17.

References

https://github.com/swallele/Vulnerability/blob/main/Openairinterface/Buffer_Overflow/Vulnerability_Report.md

Affected products (1)

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

More vulnerabilities in Openairinterface Oai-cn5g-amf

CVE-2026-30079 — Critical (CVSS 9.8): In OpenAirInterface V2.2.0 AMF, Out of sequence messages causes incorrect state transition during UE registration…
CVE-2026-30080 — High (CVSS 7.5): OpenAirInterface v2.2.0 accepts Security Mode Complete without any integrity protection. Configuration has supported…
CVE-2026-30075 — High (CVSS 7.5): OpenAirInterface Version 2.2.0 has a Buffer Overflow vulnerability in processing UplinkNASTransport containing…
CVE-2026-30078 — High (CVSS 7.5): OpenAirInterface V2.2.0 AMF crashes when it receives an NGAP message with invalid procedure code or invalid PDU-type.…
CVE-2025-66786 — High (CVSS 7.5): OpenAirInterface CN5G AMF<=v2.0.1 There is a logical error when processing JSON format requests. Unauthorized remote…

All CVEs affecting Openairinterface Oai-cn5g-amf →

Other CWE-121 (Stack-based Buffer Overflow) vulnerabilities

CVE-2026-12848 — Critical (CVSS 10.0): GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and…
CVE-2026-12847 — Critical (CVSS 10.0): GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and…
CVE-2026-12846 — Critical (CVSS 10.0): GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and…
CVE-2026-12485 — Critical (CVSS 10.0): GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and…
CVE-2026-37541 — Critical (CVSS 10.0): Buffer overflow vulnerability in Open Vehicle Monitoring System 3 (OVMS3) 3.3.005. In canformat_gvret.cpp, the length…
CVE-2026-42996 — Critical (CVSS 10.0): JS8Call through 2.3.1 and JS8Call-improved before 3.0 have a stack-based buffer overflow via a radio transmission of…

Browse all CWE-121 (Stack-based Buffer Overflow) vulnerabilities →