CVE-2021-44077
9.8, critical Known exploitedZoho ManageEngine ServiceDesk Plus Remote Code Execution Vulnerability
- CVSS
- 9.8, critical critical CVSS v3.1
- EPSS, next 30 days
- 93% higher than 99.8% of scored CVEs
- Exploitation
- Confirmed in the wild
- Published
- 29 Nov 20214 years ago
Known exploited
CISA added this to the Known Exploited Vulnerabilities Catalog on 1 Dec 2021. US federal agencies had to remediate by 15 Dec 2021, a deadline that has passed.
Required action. Apply updates per vendor instructions.
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.
Details
- Vendor
- Zoho
- Product
- Manageengine Servicedesk Plus
- Weakness
- CWE-306 (opens in a new tab)
- Status
- Analyzed
- Updated
- 17 Jun 2026
- Assigner
- cve@mitre.org
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References 6
Exploit code 1
Patches and fixes 1
Advisories 3
- pitstop.manageengine.com /portal/en/community/topic/security-advisory-for-cve-2021-44077-unauthenticated-rce-vulnerability-in-servicedesk-plus-msp-versions-10527-till-10529 (opens in a new tab)
- 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 (opens in a new tab)
- pitstop.manageengine.com /portal/en/community/topic/security-advisory-for-cve-2021-44077-unauthenticated-rce-vulnerability-in-supportcenter-plus-versions-11012-and-11013 (opens in a new tab)
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
Other Zoho CVEs
Every Zoho CVE we holdSame vendor in what we hold, not a known link between the flaws.
- CVE-2022-47966 Zoho ManageEngine Multiple Products Remote Code Execution Vulnerability KEV EPSS 100% 9.8, critical
- CVE-2022-35405 Zoho ManageEngine Multiple Products Remote Code Execution Vulnerability KEV EPSS 100% 9.8, critical
- CVE-2022-28810 Zoho ManageEngine ADSelfService Plus Remote Code Execution Vulnerability KEV EPSS 71% 6.8, medium
- CVE-2021-44515 Zoho Desktop Central Authentication Bypass Vulnerability KEV EPSS 100% 9.8, critical
- CVE-2021-40539 Zoho ManageEngine ADSelfService Plus Authentication Bypass Vulnerability KEV EPSS 99% 9.8, critical
- CVE-2021-37415 Zoho ManageEngine ServiceDesk Authentication Bypass Vulnerability KEV EPSS 100% 9.8, critical
- CVE-2020-10189 Zoho ManageEngine Desktop Central File Upload Vulnerability KEV EPSS 100% 9.8, critical
- CVE-2019-8394 Zoho ManageEngine ServiceDesk Plus (SDP) File Upload Vulnerability KEV EPSS 63% 6.5, medium
Beyond this page
Is CVE-2021-44077 in your network?
This page tells you how dangerous CVE-2021-44077 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.
CVE-2021-44077 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.
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EXYS7600 OCELOT
Find it before attackers do
Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2021-44077 comes with the devices to patch.
Learn more about EXYS7600 OCELOT -
EXYS7950 KONDRA
Detect it if it's exploited
Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.
Learn more about EXYS7950 KONDRA
Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.