CVE-2021-37415
CriticalExploitedPublic exploitZoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication.
Published Sep 1, 2021 · Updated Oct 31, 2025
Key Facts
Patch immediately- CVE-2021-37415 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Manageengine Servicedesk Plus (Zohocorp).
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Dec 1, 2021. Public exploit code is available.
- EPSS estimates a 100% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
100%
Higher than 99.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Dec 1, 2021 | Dec 15, 2021 | Not reported |
| Industry KEV feed | Dec 1, 2021 | Dec 15, 2021 | Not reported |
| CIRCL KEV | Dec 1, 2021 | Dec 15, 2021 | Not reported |
| ENISA EUVD | Dec 1, 2021 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
65 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Manageengine Servicedesk PlusZohocorp | 11.0-11005, 11.0-11006, 11.0-11007, 11.0-11008, 11.0-11009, 11.0-11010, 11.0-11011, 11.1 | n/a |
Timeline
Publicly disclosed
Sep 1, 2021
Added to CISA KEV
Dec 1, 2021
Added to Industry KEV feed
Dec 1, 2021
Added to CIRCL KEV
Dec 1, 2021
Added to ENISA EUVD
Dec 1, 2021
Last updated
Oct 31, 2025
Weakness Type
- CWE-306 Missing Authentication for Critical Function
References
FAQ
Common Questions.
Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication.
Affected: Manageengine Servicedesk Plus (Zohocorp) versions 11.0-11005, 11.0-11006, 11.0-11007, 11.0-11008, 11.0-11009, 11.0-11010, 11.0-11011, 11.1. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Dec 1, 2021.
Yes. It was added on Dec 1, 2021 with a federal remediation due date of Dec 15, 2021.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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