What is CVE-2023-49391?

CVE-2023-49391 is a high-severity vulnerability in Free5gc, classified under Code Injection. CVSS score: 7.5/10. Published 2023-12-22.

How severe is CVE-2023-49391?

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

Is CVE-2023-49391 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Free5gc

CVE-2023-49391

An issue was discovered in free5GC version 3.3.0, allows remote attackers to execute arbitrary code and cause a denial of service (DoS) on AMF component via crafted NGAP message.

Vulnerability class: RCE (Remote Code Execution)

Published 2023-12-22 · 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 (62.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.7% 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

Free5gc — versions 3.3.0

Weakness classification (CWE)

CWE-94 — Code Injection

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

github.com/free5gc/free5gc/issues/497 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2023-49391?: CVE-2023-49391 is a high-severity vulnerability in Free5gc, classified under Code Injection. CVSS score: 7.5/10. Published 2023-12-22.
How severe is CVE-2023-49391?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2023-49391 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.