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CVE-2025-66786VulnerabilityPublished

CVE-2025-66786: n/a

Source CVE Database V5

0

Not known to be exploited · CVSS 7.5 High.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 30% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

AI-suggested

European organizations should immediately assess their deployment of OpenAirInterface CN5G AMF and identify instances running versions up to 2.0.1. Until patches are available, implement strict network segmentation to isolate the SBI interface from untrusted networks and restrict access to trusted management and core network segments only. Deploy Web Application Firewalls (WAFs) or API gateways capable of validating and sanitizing JSON payloads to detect and block malformed or suspicious requests targeting the SBI interface. Enable comprehensive logging and real-time monitoring of SBI traffic to identify anomalous patterns indicative of exploitation attempts. Collaborate with OpenAirInterface developers and vendors to obtain security updates and apply patches promptly once released. Additionally, conduct regular security audits and penetration testing focused on 5G core network components to uncover and remediate similar logical errors. Educate network operations teams on this vulnerability to enhance incident response readiness.

Description

OpenAirInterface CN5G AMF<=v2.0.1 There is a logical error when processing JSON format requests. Unauthorized remote attackers can send malicious JSON data to AMF's SBI interface to launch a denial-of-service attack.

References

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