What is CVE-2023-4977?

CVE-2023-4977 is a medium-severity vulnerability in Librenms, classified under Code Injection. CVSS score: 5.4/10. Published 2023-09-15.

How severe is CVE-2023-4977?

Medium severity. CVSS v3 base score is 5.4 out of 10.

RCE in Librenms

CVE-2023-4977

Code Injection in GitHub repository librenms/librenms prior to 23.9.0.

Vulnerability class: RCE (Remote Code Execution)

Published 2023-09-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (42.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001

Affected products

Librenms
Librenms Librenms/librenms — versions unspecified

Weakness classification (CWE)

CWE-94 — Code Injection

References

huntr.dev/bounties/3db8a1a4-ca2d-45df-be18-a959ebf82fbc (Exploit, Patch, Third Party Advisory)
github.com/librenms/librenms/commit/1194934d31c795a3f6877a96ffaa34b1f475bdd0 (Patch)

Frequently asked questions

What is CVE-2023-4977?: CVE-2023-4977 is a medium-severity vulnerability in Librenms, classified under Code Injection. CVSS score: 5.4/10. Published 2023-09-15.
How severe is CVE-2023-4977?: Medium severity. CVSS v3 base score is 5.4 out of 10.