VulnerabilityPublished 2 Nov 2026

CVE-2026-117068: NAS decoder of OpenAirInterface · An Integer Underflow

Source CVE Database V5

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Not known to be exploited.

Data as of 2 Nov 2026, 17:43 UTC

Severity

High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Exploitation evidence

Disclosed: evidence found.
CVE published 2 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

AI-suggested

Until a fix is available, consider monitoring for unusual NAS Registration Requests and applying network-level protections to limit exposure to unauthenticated requests if feasible.

Description

CVE-2026-117068 is an integer underflow vulnerability in the NAS decoder of OpenAirInterface CN5G AMF version 2.2.1. It allows an unauthenticated remote attacker to cause a denial of service by sending crafted NAS Registration Requests with a truncated SUCI in the 5GS Mobile Identity IE. The vulnerability arises from insufficient length validation in the DecodeSuci() function, leading to an out-of-bounds heap read and crashing the AMF process.

References

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