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.
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Fixes

Solution

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Workaround

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History

Tue, 03 Nov 2026 00:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-125

Mon, 02 Nov 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Openairinterface
Openairinterface oai-cn5g-amf
Vendors & Products Openairinterface
Openairinterface oai-cn5g-amf

Mon, 02 Nov 2026 19:00:00 +0000

Type Values Removed Values Added
Description 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.
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-11-02T18:51:32.795Z

Reserved: 2026-10-27T00:00:00.000Z

Link: CVE-2026-117069

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-02T19:18:00.827

Modified: 2026-11-02T19:35:33.347

Link: CVE-2026-117069

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-02T23:45:20Z

Weaknesses