CVE-2021-37417
Zoho ManageEngine ADSelfService Plus version 6103 and prior allows CAPTCHA bypass due to improper...
Zoho ManageEngine ADSelfService Plus version 6103 and prior allows CAPTCHA bypass due to improper parameter validation.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Zoho ManageEngine ADSelfService Plus version 6103 and prior allows CAPTCHA bypass due to improper parameter validation.
- Record
CVE-2021-37417- CVSS 3.1
- 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
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
CVE List No score
Zoho ManageEngine ADSelfService Plus version 6103 and prior allows CAPTCHA bypass due to improper parameter validation.
- Record
CVE-2021-37417- Updated
- 2026-11-02
EUVDEUVD-2021-23982 No score
Zoho ManageEngine ADSelfService Plus version 6103 and prior allows CAPTCHA bypass due to improper parameter validation.
- Record
EUVD-2021-23982- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-93vf-46j6-q3jh
Zoho ManageEngine ADSelfService Plus version 6103 and prior allows CAPTCHA bypass due to improper...
Zoho ManageEngine ADSelfService Plus version 6103 and prior allows CAPTCHA bypass due to improper parameter validation.
- Record
GHSA-93vf-46j6-q3jh- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-37417 is a critical vulnerability (CVSS 9.8) in Zohocorp Manageengine Adselfservice Plus, published August 30, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.75%, the 91st percentile. No source names a fixed version.