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ExploitedIn CISA KEVFix available

CVE-2021-44077

Exploitation confirmed. First attested on 2021-12-01 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2021-11-29
  • Fixed in11.1
  • WeaknessCWE-306

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2021-11-2904:15CVE publishedNVD
  2. 2021-12-01Added to the CISA KEV catalogCISA KEV
  3. 2021-12-01Listed as exploited by GCVEGCVE
  4. 2021-12-01Exploitation first reportedCISA KEV
  5. 2025-02-0419:30SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-44077?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-44077?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Zohocorp manageengine servicedesk plus
BranchAffectedFixed in
11.1< 11.111.1
11.1= 11.1no fix published
11.2= 11.2no fix published
11.3= 11.3no fix published
Zohocorp manageengine servicedesk plus msp
BranchAffectedFixed in
10.5< 10.510.5
10.5= 10.5no fix published
Zohocorp manageengine supportcenter plus
BranchAffectedFixed in
11.0< 11.011.0
11.0= 11.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Zohocorp manageengine servicedesk plus to 11.1
  2. CISA’s required action: Apply updates per vendor instructions.due 2021-12-15

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
2 repositories, unverifiedhorizon3ai/CVE-2021-44077pizza-power/Golang-CVE-2021-44077-POC
PoC-in-GitHub
Metasploit modules
1 moduleexploit/windows/http/manageengine_servicedesk_plus_cve_2021_44077rank: excellentModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2021-12-01
Patch Due Date
2021-12-15
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2021-11-29
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-xm89-vxjx-jvcg

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.

Is CVE-2021-44077 actively exploited?

Yes. CVE-2021-44077 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2021-12-15.

What is the CVSS score for CVE-2021-44077?

CVE-2021-44077 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record