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Vulnerabilities

Vulnerability · CVE-2021-37415

Zoho ManageEngine ServiceDesk Authentication Bypass Vulnerability

Published Aug 31, 2021 · catalog updated Jun 16, 2026 · Zoho ManageEngine ServiceDesk Plus (SDP)

Patch now

CVE-2021-37415 is in the CISA known-exploited catalog, due Dec 15, 2021. Confirm Zoho ManageEngine ServiceDesk Plus (SDP) against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
99.83%
Remediation
Remediation guidance
Affected products
cpe zohocorp/manageengine servicedesk plus · vendor Zoho ManageEngine ServiceDesk Plus (SDP)

Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe zohocorp/manageengine servicedesk plus11.0
  • cpe zohocorp/manageengine servicedesk plus11.1
  • vendor Zoho ManageEngine ServiceDesk Plus (SDP)version unspecified

How to fix CVE-2021-37415

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2021-37415 is in the CISA known-exploited catalog, due Dec 15, 2021. Confirm Zoho ManageEngine ServiceDesk Plus (SDP) against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with zohocorp/manageengine servicedesk plus 11.0; zohocorp/manageengine servicedesk plus 11.1. Apply updates per vendor instructions.

What should an analyst verify?

CWE-306: Missing Authentication for Critical Function. EPSS 99.83%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 31, 2021 · Catalog

    Detected

    Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication.

  2. Dec 1, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Dec 15, 2021 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication.

Sources

  • CISA KEVConfirmed exploitationCVE-2021-37415

    Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication

    cisa.gov
  • CVE.orgVulnerability recordCVE-2021-37415

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-37415

    30-day exploitation probability 99.8%

    first.org
  • NIST NVDVulnerability recordCVE-2021-37415

    Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2021-37415

    Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.