What is CVE-2024-34476?

CVE-2024-34476 is a medium-severity vulnerability in Open5gs, classified under Buffer Access with Incorrect Length Value. CVSS score: 5.3/10. Published 2024-05-05.

How severe is CVE-2024-34476?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Open5gs

CVE-2024-34476

Open5GS before 2.7.1 is vulnerable to a reachable assertion that can cause an AMF crash via NAS messages from a UE: ogs_nas_encrypt in lib/nas/common/security.c for pkbuf->len.

Published 2024-05-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.005 (42.5th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Open5gs

Weakness classification (CWE)

CWE-805 — Buffer Access with Incorrect Length Value

References

github.com/open5gs/open5gs/pull/3122 (Issue Tracking, Vendor Advisory)
github.com/open5gs/open5gs/compare/v2.7.0...v2.7.1 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2024-34476?: CVE-2024-34476 is a medium-severity vulnerability in Open5gs, classified under Buffer Access with Incorrect Length Value. CVSS score: 5.3/10. Published 2024-05-05.
How severe is CVE-2024-34476?: Medium severity. CVSS v3 base score is 5.3 out of 10.