What is CVE-2021-40173?

CVE-2021-40173 is a high-severity vulnerability in Zohocorp Manageengine Cloud Security Plus, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-08-29.

How severe is CVE-2021-40173?

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

CSRF in Zohocorp Manageengine Cloud Security Plus

CVE-2021-40173

Zoho ManageEngine Cloud Security Plus before Build 4117 allows a CSRF attack on the server proxy settings.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2021-08-29 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.010 (61.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Zohocorp Manageengine Cloud Security Plus — versions 4.1

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

www.manageengine.com/cloud-security/release-notes.html (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2021-40173?: CVE-2021-40173 is a high-severity vulnerability in Zohocorp Manageengine Cloud Security Plus, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-08-29.
How severe is CVE-2021-40173?: High severity. CVSS v3 base score is 8.8 out of 10.