What is CVE-2020-17564?

CVE-2020-17564 is a critical-severity vulnerability in Feifeicms, classified under Path Traversal. CVSS score: 9.1/10. Published 2021-04-22.

How severe is CVE-2020-17564?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Path Traversal in Feifeicms

CVE-2020-17564

Path Traversal in FeiFeiCMS v4.0 allows remote attackers to delete arbitrary files by sending a crafted HTTP request to the " Admin/DataAction.class.php" component.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2021-04-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.026 (84.8th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000

Affected products

Feifeicms — versions 4.0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

blog.51cto.com/12653365/2328557 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-17564?: CVE-2020-17564 is a critical-severity vulnerability in Feifeicms, classified under Path Traversal. CVSS score: 9.1/10. Published 2021-04-22.
How severe is CVE-2020-17564?: Critical severity. CVSS v3 base score is 9.1 out of 10.