How severe is CVE-2021-37415?

CVE-2021-37415 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-37415 being actively exploited?

Yes. CVE-2021-37415 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2021-12-01, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2021-37415?

CVE-2021-37415 primarily affects Zohocorp Manageengine Servicedesk Plus. In total, 65 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-37415?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2021-37415 have an EU (EUVD) identifier?

Yes. CVE-2021-37415 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-23980. It is also flagged as exploited in the EUVD (since 2021-12-01).

When was CVE-2021-37415 published?

CVE-2021-37415 was published on 2021-09-01 and last updated on 2026-06-17.

CVE-2021-37415

CVE-2021-37415 is a critical-severity vulnerability in Zohocorp Manageengine Servicedesk Plus with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2021-12-01). The underlying weakness is classified as CWE-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 100% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2021-12-01)
EU (EUVD) id: EUVD-2021-23980
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2021-12-01)
Weakness: CWE-306
Affected product: Zohocorp Manageengine Servicedesk Plus
Published: 2021-09-01
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2021-37415?: Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs without authentication.
How severe is CVE-2021-37415?: CVE-2021-37415 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-37415 being actively exploited?: Yes. CVE-2021-37415 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2021-12-01, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2021-37415?: CVE-2021-37415 primarily affects Zohocorp Manageengine Servicedesk Plus. In total, 65 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-37415?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2021-37415 have an EU (EUVD) identifier?: Yes. CVE-2021-37415 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-23980. It is also flagged as exploited in the EUVD (since 2021-12-01).
When was CVE-2021-37415 published?: CVE-2021-37415 was published on 2021-09-01 and last updated on 2026-06-17.

References

Affected products (65)

cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.0:11005:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.0:11006:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.0:11007:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.0:11008:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.0:11009:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.0:11010:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.0:11011:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:-:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11100:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11101:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11102:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11103:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11104:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11105:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11106:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11107:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11108:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11109:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11110:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11111:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11112:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11113:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11114:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11115:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11116:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11117:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11118:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11119:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11120:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11121:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11122:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11123:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11124:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11125:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11126:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11127:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11128:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11129:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11130:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11131:*:*:*:*:*:*

More vulnerabilities in Zohocorp Manageengine Servicedesk Plus

CVE-2022-47966 — Critical (CVSS 9.8): Multiple Zoho ManageEngine on-premise products, such as ServiceDesk Plus through 14003, allow remote code execution due…
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CVE-2020-35682 — High (CVSS 8.8): Zoho ManageEngine ServiceDesk Plus before 11134 allows an Authentication Bypass (only during SAML login).
CVE-2017-9362 — High (CVSS 8.8): ManageEngine ServiceDesk Plus before 9312 contains an XML injection at add Configuration items CMDB API.

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