What is CVE-2023-28340?

CVE-2023-28340 is a medium-severity vulnerability in Zohocorp Manageengine Applications Manager, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 6.5/10. Published 2023-04-11.

How severe is CVE-2023-28340?

Medium severity. CVSS v3 base score is 6.5 out of 10.

XXE in Zohocorp Manageengine Applications Manager

CVE-2023-28340

Zoho ManageEngine Applications Manager through 16320 allows the admin user to conduct an XXE attack.

Vulnerability class: XXE (XML External Entity)

Published 2023-04-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.032 (87.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000

Affected products

Zohocorp Manageengine Applications Manager — versions 16.3

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

manageengine.com (Product)
www.manageengine.com/products/applications_manager/security-updates/security-up… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-28340?: CVE-2023-28340 is a medium-severity vulnerability in Zohocorp Manageengine Applications Manager, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 6.5/10. Published 2023-04-11.
How severe is CVE-2023-28340?: Medium severity. CVSS v3 base score is 6.5 out of 10.