What is CVE-2021-44278?

CVE-2021-44278 is a critical-severity vulnerability in Librenms, classified under Path Traversal. CVSS score: 9.8/10. Published 2021-12-03.

How severe is CVE-2021-44278?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Path Traversal in Librenms

CVE-2021-44278

Librenms 21.11.0 is affected by a path manipulation vulnerability in includes/html/pages/device/showconfig.inc.php.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2021-12-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.015 (73.2th percentile), scored 2026-10-09.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.015 · change: +0.000

Affected products

Librenms — versions 21.11.0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

github.com/librenms/librenms/pull/13554 (Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-44278?: CVE-2021-44278 is a critical-severity vulnerability in Librenms, classified under Path Traversal. CVSS score: 9.8/10. Published 2021-12-03.
How severe is CVE-2021-44278?: Critical severity. CVSS v3 base score is 9.8 out of 10.