CVE-2021-44077
Confirmed PUBLISHEDZoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014 are vulnerable to...
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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.
- CVE Published
- Nov 29, 2021
- Exploitation Reported
- Dec 01, 2021
- CVSS
- 9.8 Critical
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| n/a |
n/a
|
n/a |
Affected |
CVE References
- pitstop.manageengine.com/portal/en/community/topic/security-advisory-... pitstop.manageengine.com · CVE Record https://pitstop.manageengine.com/portal/en/community/topic/security-a...
- pitstop.manageengine.com/portal/en/community/topic/security-advisory-... pitstop.manageengine.com · CVE Record https://pitstop.manageengine.com/portal/en/community/topic/security-a...
- pitstop.manageengine.com/portal/en/community/topic/security-advisory-... pitstop.manageengine.com · CVE Record https://pitstop.manageengine.com/portal/en/community/topic/security-a...
- pitstop.manageengine.com/portal/en/community/topic/security-advisory-... pitstop.manageengine.com · CVE Record https://pitstop.manageengine.com/portal/en/community/topic/security-a...
- packetstormsecurity.com/files/165400/ManageEngine-ServiceDesk-Plus-R... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/165400/ManageEngine-ServiceDesk-...
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2021-12-01 00:00 UTC |
Scanner Artifacts
Nuclei and Metasploit references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-44077.yaml | Apr 25, 2025 |
| Metasploit | https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/manageengine_servicedesk_plus_cve_2021_44077.rb | Apr 28, 2025 |
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
Exploitation Status
Exploited in the wild
Recorded 2021-12-01 00:00:00 UTC · CISA
Proof of concept available
Recorded 2021-12-08 20:24:38 UTC · GitHub
Weaknesses (CWE)
-
Missing Authentication for Critical Function
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Metasploit | https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/manageengine_servicedesk_plus_cve_2021_44077.rb | Apr 28, 2025 |
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-44077.yaml | Apr 25, 2025 |
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2022-09-29 14:07:54 UTC · 2 stars
Golang Proof of Concept Exploit for CVE-2021-44077: PreAuth RCE in ManageEngine ServiceDesk Plus < 11306
github · Created 2021-12-08 20:24:38 UTC · 33 stars
Proof of Concept Exploit for ManageEngine ServiceDesk Plus CVE-2021-44077
nuclei · Created Unknown
metasploit · Created Unknown
Metasploit module for CVE-2021-44077
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
15:02 UTC about 1 year ago15:02 UTC · about 1 year ago
Metasploit module available
Exploit module available
-
00:00 UTC about 1 year ago00:00 UTC · about 1 year ago
Nuclei template available
Scanner coverage available
-
20:24 UTC over 4 years ago20:24 UTC · over 4 years ago
Public PoC available
Public proof-of-concept code published
-
00:00 UTC over 4 years ago00:00 UTC · over 4 years ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
03:17 UTC over 4 years ago03:17 UTC · over 4 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC over 4 years ago00:00 UTC · over 4 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2021-44077
{
"cve_id": "CVE-2021-44077",
"title": "Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before ...",
"affected_vendor": "Zoho",
"affected_product": "ManageEngine ServiceDesk Plus, ManageEngine ServiceDesk Plus MSP, ManageEngine SupportCenter Plus",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 9.8,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}