What is CVE-2021-44081?

CVE-2021-44081 is a high-severity vulnerability in Open5gs, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2022-03-29.

How severe is CVE-2021-44081?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Open5gs

CVE-2021-44081

A buffer overflow vulnerability exists in the AMF of open5gs 2.1.4. When the length of MSIN in Supi exceeds 24 characters, it leads to AMF denial of service.

Vulnerability class: Buffer Overflow

Published 2022-03-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.010 (63.2th percentile), scored 2026-10-08.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Open5gs — versions 2.1.4

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/open5gs/open5gs/issues/1206 (Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-44081?: CVE-2021-44081 is a high-severity vulnerability in Open5gs, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2022-03-29.
How severe is CVE-2021-44081?: High severity. CVSS v3 base score is 7.5 out of 10.