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OpenAirInterface-CN5G-AMF

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.

CVE-2025-66786 identifies a logical error vulnerability in OpenAirInterface CN5G Access and Mobility Management Function (AMF) software versions up to 2.0.1. The AMF is a critical component of the 5G core network responsible for managing connection and mobility of user equipment. The vulnerability arises from improper handling of JSON-formatted requests sent to the AMF's Service-Based Interface (SBI). Specifically, an attacker can craft malicious JSON data that exploits this logical flaw to trigger a denial-of-service (DoS) condition, effectively disrupting the AMF's operation. This attack vector is notable because it does not require authentication, allowing any remote attacker with network access to the SBI interface to exploit it. The SBI interface typically uses HTTP/2 and RESTful APIs for communication between 5G core network functions, making it a critical attack surface. The vulnerability's exploitation leads to resource exhaustion or crashes in the AMF, causing service interruptions in the 5G network. No patches or fixes are currently linked, and no public exploits have been reported, but the vulnerability is published and reserved under CVE-2025-66786. The lack of a CVSS score necessitates an independent severity assessment based on impact and exploitability factors.

Detailed information about CVE-2025-66786: n/a. Get real-time updates, technical details, and mitigation strategies.

CVE-2025-66786: n/a - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-66786: n/a

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.

CVE-2025-65805 identifies a buffer overflow vulnerability in the OpenAirInterface (OAI) 5G Core Access and Mobility Management Function (AMF) component, specifically in versions up to 2.1.9. The vulnerability is triggered when the AMF processes NAS (Non-Access Stratum) messages containing an IMSI (International Mobile Subscriber Identity) string exceeding 1000 characters, which is significantly longer than typical IMSI lengths. The AMF listens on the N1 interface, which connects the 5G User Equipment (UE) to the core network. Due to insufficient input validation on the length of the IMSI string within NAS messages, an attacker can send a crafted message to overflow the buffer. This overflow can lead to a denial-of-service (DoS) condition by crashing the AMF or, more critically, enable remote code execution (RCE) if the attacker can control the overflow data to inject malicious code. Exploitation requires network access to the N1 port but does not require any authentication or user interaction, making it a remotely exploitable vulnerability. The AMF is a critical component responsible for managing UE registration, connection, and mobility in the 5G core network, so disruption or compromise can severely impact network availability and security. No patches or exploits are currently publicly documented, but the vulnerability is publicly disclosed and reserved under CVE-2025-65805. The lack of a CVSS score indicates that detailed impact metrics are not yet assigned, but the nature of the vulnerability suggests a high risk. This vulnerability is particularly relevant for operators and vendors deploying OAI CN5G AMF in production environments, especially in Europe where OAI is used in research and some commercial 5G deployments.

Detailed information about CVE-2025-65805: n/a. Get real-time updates, technical details, and mitigation strategies.

CVE-2025-65805: n/a - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-65805: n/a


CVE-2025-66786: n/aCVE-2025-66786 0 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. HighVulnerabilityGermanyFranceUnited Kingdom+4#cve #cve-2025-66786 Join the discussion	CVE Database V5	01/07/2026, 00:00:00 UTC Added: 01/07/2026, 16:42:31 UTC
CVE-2025-65805: n/aCVE-2025-65805 0 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. HighVulnerabilityGermanyFranceUnited Kingdom+4#cve #cve-2025-65805 Join the discussion	CVE Database V5	01/07/2026, 00:00:00 UTC Added: 01/07/2026, 16:42:31 UTC

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