What is CVE-2022-38871?

CVE-2022-38871 is a high-severity vulnerability in Free5gc, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2022-11-18.

How severe is CVE-2022-38871?

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

Resource exhaustion in Free5gc

CVE-2022-38871

In Free5gc v3.0.5, the AMF breaks due to malformed NAS messages.

Vulnerability class: DoS (Denial of Service)

Published 2022-11-18 · 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: 0.008 (53.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.000

Affected products

Free5gc — versions 3.0.5

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

github.com/free5gc/free5gc/issues/198 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2022-38871?: CVE-2022-38871 is a high-severity vulnerability in Free5gc, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2022-11-18.
How severe is CVE-2022-38871?: High severity. CVSS v3 base score is 7.5 out of 10.