CVE-2026-117069
UnknownSummary
An integer truncation vulnerability in the NAS decoder of OpenAirInterface (OAI) CN5G AMF v2.2.1 allows an unauthenticated remote attacker to cause a denial of service (DoS) via crafted NAS Registration Requests containing a malformed IMEISV in the 5GS Mobile Identity IE. The Type6NasIe::Validate() function truncates a 32-bit length value to 16 bits, bypassing length validation and causing an out-of-bounds heap read in DecodeImeisv(), which can crash the AMF process.
Risk Assessment
An attacker can remotely, without authentication, crash the AMF process, causing service unavailability for users and disruption of 5G network operations.
Recommendation
Update OpenAirInterface CN5G AMF to a version containing the fix or implement mitigations such as filtering NAS traffic and monitoring for unusual registration requests.
Other vulnerabilities in OpenAirInterface CN5G AMF
See all- CVE-2026-117068Unknown
An integer underflow vulnerability in the NAS decoder of OpenAirInterface (OAI) CN5G AMF v2.2.1 allows an unauthenticated remote attacker to cause a denial of service (DoS) via crafted NAS Registration Requests containing a truncated SUCI in the 5GS Mobile Identity IE. Insufficient length validation in the DecodeSuci() function results in an out-of-bounds heap read, causing the AMF process to crash.
- CVE-2026-117067Unknown
An out-of-bounds memory access vulnerability in the N2 SCTP interface of OpenAirInterface (OAI) CN5G AMF v2.2.1 allows an unauthenticated remote attacker to cause a denial of service (DoS) by repeatedly establishing SCTP associations, resulting in a process crash due to improper file descriptor bounds checking in the FD_SET() operation.
- CVE-2025-66786High
OpenAirInterface CN5G AMF up to version 2.0.1 has a logical error when processing JSON format requests. Unauthorized remote attackers can send malicious JSON data to the AMF's SBI interface to launch a denial-of-service attack.
- CVE-2025-65805High
OpenAirInterface CN5G AMF up to version 2.1.9 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 sending an imsi string longer than 1000 to port N1.
- CVE-2024-24443Medium
An uninitialized pointer dereference in the ngap_handle_pdu_session_resource_setup_response routine of OpenAirInterface CN5G AMF (oai-cn5g-amf) up to v2.0.0 allows attackers to cause a Denial of Service (DoS) via a crafted PDU Session Resource Setup Response.
- CVE-2024-24451High
A stack overflow vulnerability exists in the sctp_server::sctp_receiver_thread component of OpenAirInterface CN5G AMF (oai-cn5g-amf) up to version 2.0.0. An attacker can repeatedly establish SCTP connections over the N2 interface, causing a system crash.
- CVE-2024-24445Medium
A null dereference vulnerability in OpenAirInterface CN5G AMF (oai-cn5g-amf) version 2.0.0 and earlier occurs when handling unsupported NGAP protocol messages. An attacker with network-adjacent access can trigger a denial of service.
- CVE-2024-24444High
In OpenAirInterface CN5G AMF up to version 2.0.0, improper file descriptor handling for closed connections was found. An attacker can repeatedly establish SCTP connections via the N2 interface, leading to resource exhaustion and Denial of Service (DoS).
- CVE-2024-24442High
A NULL pointer dereference in the ngap_app::handle_receive routine of OpenAirInterface CN5G AMF (oai-cn5g-amf) up to v2.0.0 allows attackers to cause a Denial of Service (DoS) via a crafted NGAP message.
Original NVD description (English source)
An integer truncation vulnerability in the NAS decoder of OpenAirInterface (OAI) CN5G AMF v2.2.1 allows an unauthenticated remote attacker to cause a denial of service (DoS) via crafted NAS Registration Requests containing a malformed IMEISV in the 5GS Mobile Identity IE. The Type6NasIe::Validate() function truncates a 32-bit length value to 16 bits, bypassing length validation and causing an out-of-bounds heap read in DecodeImeisv(), which can crash the AMF process.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS