What is CVE-2021-37447?

CVE-2021-37447 is a high-severity vulnerability in Nchsoftware Quorum, classified under Path Traversal. CVSS score: 8.1/10. Published 2021-07-25.

How severe is CVE-2021-37447?

High severity. CVSS v3 base score is 8.1 out of 10.

Path Traversal in Nchsoftware Quorum

CVE-2021-37447

In NCH Quorum v2.03 and earlier, an authenticated user can use directory traversal via documentdelete?file=/.. for file deletion.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2021-07-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.016 (74.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Nchsoftware Quorum

Weakness classification (CWE)

CWE-22 — Path Traversal

References

github.com/0xfml/poc/blob/main/NCH/Quorum_2.03_LFI.md (Exploit, Third Party Advisory)
www.nch.com.au/conference/index.html (Product)

Frequently asked questions

What is CVE-2021-37447?: CVE-2021-37447 is a high-severity vulnerability in Nchsoftware Quorum, classified under Path Traversal. CVSS score: 8.1/10. Published 2021-07-25.
How severe is CVE-2021-37447?: High severity. CVSS v3 base score is 8.1 out of 10.