CVEvulnerability

CVE-2021-40539

9.8 CRITICAL Known exploited Published 2021-09-07 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Zoho ManageEngine ADSelfService Plus Authentication Bypass Vulnerability — Zoho ManageEngine

Zoho ManageEngine ADSelfService Plus contains an authentication bypass vulnerability affecting the REST API URLs which allow for remote code execution.

Added to KEV
2021-11-03
Remediation due
2021-11-17
Ransomware use
Known
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-40539
Status
Analyzed
Published
2021-09-07
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-706

Description

Zoho ManageEngine ADSelfService Plus version 6113 and prior is vulnerable to REST API authentication bypass with resultant remote code execution.

Affected configurations

• zohocorp manageengine adselfservice plus (< 6.1) • zohocorp manageengine adselfservice plus 6.1

Related

Weakness · CWE (1)

  • CWE-706 Use of Incorrectly-Resolved Name or Reference weakness

References