CVE-2021-40539
Detail
Description
Zoho ManageEngine ADSelfService Plus version 6113 and prior is vulnerable to REST API authentication bypass with resultant remote code execution.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 Severity and Vector Strings:
Vector:
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
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This CVE is in CISA's Known Exploited Vulnerabilities Catalog
Reference
CISA's BOD 22-01 and Known
Exploited Vulnerabilities Catalog for further guidance and requirements.
Vulnerability Name
Date Added
Due Date
Required Action
Zoho ManageEngine ADSelfService Plus Authentication Bypass Vulnerability
11/03/2021
11/17/2021
Apply updates per vendor instructions.
Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-706
Use of Incorrectly-Resolved Name or Reference
NIST
CISA-ADP
Change History
14 change records found show changes
Modified Analysis by NIST 11/05/2025 2:13:20 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
Record truncated, showing 2048 of 14100 characters. View Entire Change Record
OR
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.7:5701:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.7:5700:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.7:5702:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5000:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5001:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5002:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5010:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5011:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5020:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5021:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5022:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5030:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5032:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5040:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5041:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.1:5100:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.1:5101:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.1:5102:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.1:5103:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.1:5104:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.1:5105:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.1:5106:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.1:5107:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.1:5108:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfser
OR
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:6.1:6100:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:6.1:6103:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:6.1:-:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:*:*:*:*:*:*:*:* versions up to (excluding) 6.1
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:6.1:6101:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:6.1:6102:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:6.1:6104:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:6.1:6105:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:6.1:6106:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:6.1:6113:*:*:*:*:*:*
Added
Reference Type
CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40539 Types: US Government Resource
CVE Modified by CISA-ADP 10/21/2025 8:17:45 PM
Action
Type
Old Value
New Value
Added
Reference
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40539
CVE Modified by CISA-ADP 10/21/2025 4:18:47 PM
Action
Type
Old Value
New Value
Removed
Reference
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40539
CVE Modified by CISA-ADP 10/21/2025 3:19:22 PM
Action
Type
Old Value
New Value
Added
Reference
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40539
Modified Analysis by NIST 7/30/2025 3:10:23 PM
Action
Type
Old Value
New Value
Changed
Reference Type
CVE: https://www.manageengine.com Types: Vendor Advisory
CVE: https://www.manageengine.com Types: Product
Changed
Reference Type
MITRE: https://www.manageengine.com Types: Vendor Advisory
MITRE: https://www.manageengine.com Types: Product
CVE Modified by CISA-ADP 7/29/2025 10:16:35 PM
Action
Type
Old Value
New Value
Added
CWE
CWE-706
Modified Analysis by NIST 4/03/2025 3:48:33 PM
Action
Type
Old Value
New Value
CVE Modified by CISA-ADP 2/03/2025 11:15:31 AM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE Modified by CVE 11/21/2024 1:24:20 AM
Action
Type
Old Value
New Value
Added
Reference
http://packetstormsecurity.com/files/165085/ManageEngine-ADSelfService-Plus-Authentication-Bypass-Code-Execution.html
Added
Reference
https://www.manageengine.com
Added
Reference
https://www.manageengine.com/products/self-service-password/kb/how-to-fix-authentication-bypass-vulnerability-in-REST-API.html
CVE Modified by MITRE 5/14/2024 5:27:07 AM
Action
Type
Old Value
New Value
CWE Remap by NIST 8/08/2023 10:22:24 AM
Action
Type
Old Value
New Value
Changed
CWE
CWE-287
CWE-706
Modified Analysis by NIST 11/29/2021 12:18:58 PM
Action
Type
Old Value
New Value
Changed
Reference Type
http://packetstormsecurity.com/files/165085/ManageEngine-ADSelfService-Plus-Authentication-Bypass-Code-Execution.html No Types Assigned
http://packetstormsecurity.com/files/165085/ManageEngine-ADSelfService-Plus-Authentication-Bypass-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
CVE Modified by MITRE 11/27/2021 2:15:06 AM
Action
Type
Old Value
New Value
Added
Reference
http://packetstormsecurity.com/files/165085/ManageEngine-ADSelfService-Plus-Authentication-Bypass-Code-Execution.html [No Types Assigned]
Initial Analysis by NIST 9/14/2021 2:24:38 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added
CVSS V2
NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Added
CWE
NIST CWE-287
Added
CPE Configuration
Record truncated, showing 2048 of 13249 characters. View Entire Change Record OR
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4510:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4511:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4520:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4522:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4531:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4540:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4543:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4544:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4550:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4560:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4570:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4571:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4572:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4580:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4590:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4591:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4592:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5000:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5001:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5002:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5010:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5011:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5020:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5021:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5022:*:*:*:*:*:*
*cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:5.0:5030:*:*:*:*:*:*
*cpe:2.3:a:z
Changed
Reference Type
https://www.manageengine.com No Types Assigned
https://www.manageengine.com Vendor Advisory
Changed
Reference Type
https://www.manageengine.com/products/self-service-password/kb/how-to-fix-authentication-bypass-vulnerability-in-REST-API.html No Types Assigned
https://www.manageengine.com/products/self-service-password/kb/how-to-fix-authentication-bypass-vulnerability-in-REST-API.html Patch, Vendor Advisory
Quick Info
CVE Dictionary Entry: CVE-2021-40539 NVD
Published Date: 09/07/2021 NVD
Last Modified: 11/05/2025
Source: MITRE
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