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TI-2026-83919 Aliases CVE-2026-117068GHSA-6384-rh84-ww6f

Integer underflow in OpenAirInterface CN5G AMF NAS decoder

Priority HIGH 72CWE-191Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-191 and the CVSS impact.

Summary

OpenAirInterface (OAI) CN5G AMF v2.2.1 is affected. Insufficient length validation in the DecodeSuci() function of the NAS decoder causes an integer underflow (CWE-191) that leads to an out-of-bounds heap read. An unauthenticated remote attacker can send NAS Registration Requests with a truncated SUCI in the 5GS Mobile Identity IE, crashing the AMF process and causing a denial of service.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00424 36th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for OpenAirInterface CN5G AMF.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Timeline

  1. 2026-11-02 Threatist record created from CVE-2026-117068
  2. 2026-11-02 Alias added: GHSA-6384-rh84-ww6f
  3. 2026-11-06 CVSS score added · CISA ADP
  4. 2026-11-06 Weakness changed · CISA ADP
  5. 2026-11-06 CISA SSVC decision points changed
  6. 2026-11-06 Priority changed: LOW → HIGH

References

Other 3

Sources

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