What is CVE-2021-43397?

CVE-2021-43397 is a high-severity vulnerability in Liquidfiles, classified under Insufficiently Protected Credentials. CVSS score: 8.8/10. Published 2021-11-11.

How severe is CVE-2021-43397?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Liquidfiles

CVE-2021-43397

LiquidFiles before 3.6.3 allows remote attackers to elevate their privileges from Admin (or User Admin) to Sysadmin.

Published 2021-11-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.038 (89.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.037 · newest: 0.038 · change: +0.001

Affected products

Liquidfiles

Weakness classification (CWE)

CWE-522 — Insufficiently Protected Credentials

References

forum.liquidfiles.com/forums/news.6/ (Vendor Advisory)
man.liquidfiles.com/release_notes/version_3-6-x.html (Release Notes, Vendor Advisory)
packetstormsecurity.com/files/164997/LiquidFiles-3.5.13-Privilege-Escalation.ht… (Exploit, VDB Entry, Third Party Advisory)
seclists.org/fulldisclosure/2021/Nov/40 (mailing-list, Exploit, Mailing List, Third Party Advisory)
seclists.org/fulldisclosure/2021/Nov/52 (mailing-list, Exploit, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2021-43397?: CVE-2021-43397 is a high-severity vulnerability in Liquidfiles, classified under Insufficiently Protected Credentials. CVSS score: 8.8/10. Published 2021-11-11.
How severe is CVE-2021-43397?: High severity. CVSS v3 base score is 8.8 out of 10.