An integer underflow vulnerability in the NAS decoder of OpenAirInterface (OAI) CN5G AMF v2.2.1 allows an unauthenticated remote attacker…
Only OpenAirInterface Core Network AMF v2.2.1 is listed, and the crash occurs when it receives a malformed NAS Registration Request with a truncated SUCI in the 5GS Mobile Identity IE. No fix is listed.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- No fix listed
- Who is exposed
- Not reported
Do first: Workaround: The checked facts give no workaround. They do not describe a specific mitigation for the period before a fix is available.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 12/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Unclear
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
OpenAirInterface's 5G core Access and Mobility Management Function (AMF) is affected, which handles device registration and mobility in 5G networks. An unauthenticated remote attacker can send specially crafted registration messages that crash the AMF process, causing a denial of service.
Read the original 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.
What to do
Workaround: The checked facts give no workaround. They do not describe a specific mitigation for the period before a fix is available.
Timeline
- CVE published
- Record last updated
- First seen by cve.now
Evidence 3
- Repository
- Repository
- Link
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-117068
What does this mean?
An integer underflow in the AMF NAS decoder is triggered by a malformed NAS Registration Request that carries a truncated SUCI. The AMF process crashes, causing a denial of service.Source: gist.github.com
Am I affected, and how do I check?
The listed affected product is OpenAirInterface Core Network (OAI CN5G AMF) v2.2.1. The issue involves malformed NAS Registration Requests with a truncated SUCI in the 5GS Mobile Identity IE. To check a deployment, confirm which AMF version is in use.Source: gist.github.com
What should I do about it?
The checked facts do not name a fixed version, so no upgrade target can be given from them. Check the vendor's advisory for a fix.Source: gist.github.com
Is it being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
What if there's no patch?
The checked facts give no workaround. They do not describe a specific mitigation for the period before a fix is available.Source: gist.github.com