CVE-2026-117069

Published Nov 2, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Integer truncation in OpenAirInterface CN5G AMF NAS decoder allows unauthenticated DoS
Type Values Removed Values Added
Title Integer truncation in OpenAirInterface CN5G AMF NAS decoder allows unauthenticated DoS
Weaknesses CWE-125
Type Values Removed Values Added
Weaknesses CWE-197
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-125
Type Values Removed Values Added
First Time appeared Openairinterface
Openairinterface oai-cn5g-amf
Vendors & Products Openairinterface
Openairinterface oai-cn5g-amf
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
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Nov 3, 2026, 1:28 PM
Reserved
Oct 27, 2026, 12:00 AM
Status
Deferred
Published
Nov 2, 2026, 7:18 PM
Modified
Nov 3, 2026, 2:17 PM