Description
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.
Published: 2026-11-02
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Sat, 07 Nov 2026 07:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Fri, 06 Nov 2026 22:00:00 +0000

Type Values Removed Values Added
Title Integer Underflow in AMF NAS Decoder Causing Denial of Service

Fri, 06 Nov 2026 20:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-191
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'}


Mon, 02 Nov 2026 19:30:00 +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 18:45:00 +0000

Type Values Removed Values Added
Title Integer Underflow in AMF NAS Decoder Causing Denial of Service
Weaknesses CWE-190
CWE-20

Mon, 02 Nov 2026 17:30:00 +0000

Type Values Removed Values Added
Description 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.
References

Subscriptions

Openairinterface Oai-cn5g-amf
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-11-06T19:14:19.713Z

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

Link: CVE-2026-117068

cve-icon Vulnrichment

Updated: 2026-11-06T19:14:04.555Z

cve-icon NVD

Status : Deferred

Published: 2026-11-02T18:18:43.923

Modified: 2026-11-06T20:17:13.770

Link: CVE-2026-117068

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-06T21:45:10Z

Weaknesses