CVE-2021-44077

CVE-2021-44077 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: 94% (100th percentile)
• Actively exploited: Yes — listed in CISA KEV (added 2021-12-01)
• EU (EUVD) id: EUVD-2021-30936
• EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2021-12-01)
• Weakness: CWE-306
• Affected product: Zohocorp Manageengine Servicedesk Plus
• Published: 2021-11-29
• Last modified: 2026-06-17

Description

Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014 are vulnerable to unauthenticated remote code execution. This is related to /RestAPI URLs in a servlet, and ImportTechnicians in the Struts configuration.

Frequently asked questions

What is CVE-2021-44077?

Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014 are vulnerable to unauthenticated remote code execution. This is related to /RestAPI URLs in a servlet, and ImportTechnicians in the Struts configuration.

How severe is CVE-2021-44077?

CVE-2021-44077 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-2021-44077 being actively exploited?

Yes. CVE-2021-44077 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-2021-44077?

CVE-2021-44077 primarily affects Zohocorp Manageengine Servicedesk Plus. In total, 73 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-44077?

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-2021-44077 have an EU (EUVD) identifier?

Yes. CVE-2021-44077 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-30936. It is also flagged as exploited in the EUVD (since 2021-12-01).

When was CVE-2021-44077 published?

CVE-2021-44077 was published on 2021-11-29 and last updated on 2026-06-17.

References

• http://packetstormsecurity.com/files/165400/ManageEngine-ServiceDesk-Plus-Remote-Code-Execution.html
• https://pitstop.manageengine.com/portal/en/community/topic/security-advisory-authentication-bypass-vulnerability-in-servicedesk-plus-versions-11138-and-above
• https://pitstop.manageengine.com/portal/en/community/topic/security-advisory-for-cve-2021-44077-unauthenticated-rce-vulnerability-in-servicedesk-plus-msp-versions-10527-till-10529
• https://pitstop.manageengine.com/portal/en/community/topic/security-advisory-for-cve-2021-44077-unauthenticated-rce-vulnerability-in-servicedesk-plus-versions-up-to-11305-22-11-2021
• https://pitstop.manageengine.com/portal/en/community/topic/security-advisory-for-cve-2021-44077-unauthenticated-rce-vulnerability-in-supportcenter-plus-versions-11012-and-11013
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-44077

Affected products (73)

• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:*:*:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11138:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11139:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11140:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11141:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11142:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11143:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11144:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.1:11145:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.2:11200:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.2:11201:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.2:11202:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.2:11203:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.2:11204:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.2:11205:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.2:11206:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.2:11207:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.2:11208:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.2:11209:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.2:11210:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.2:11211:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.3:11300:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.3:11301:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.3:11302:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.3:11303:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.3:11304:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus:11.3:11305:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:*:*:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10500:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10501:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10502:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10503:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10504:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10505:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10506:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10507:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10508:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10509:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10510:*:*:*:*:*:*
• cpe:2.3:a:zohocorp:manageengine_servicedesk_plus_msp:10.5:10511:*:*:*:*:*:*

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…
• CVE-2021-44526 — Critical (CVSS 9.8): Zoho ManageEngine ServiceDesk Plus before 12003 allows authentication bypass in certain admin configurations.
• CVE-2021-37415 — Critical (CVSS 9.8): Zoho ManageEngine ServiceDesk Plus before 11302 is vulnerable to authentication bypass that allows a few REST-API URLs…
• CVE-2019-8395 — Critical (CVSS 9.8): An Insecure Direct Object Reference (IDOR) vulnerability exists in Zoho ManageEngine ServiceDesk Plus (SDP) before 10.0…
• 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.

All CVEs affecting Zohocorp Manageengine Servicedesk Plus →

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