CVE-2021-44077Known exploitationPublic exploitNetwork attack vector

Unauthenticated code execution via exposed file upload

Published Nov 29, 2021 · Updated Oct 21, 2025

Unauthenticated RCE in Zoho ManageEngine ServiceDesk Plus, ServiceDesk Plus MSP, and SupportCenter Plus allows remote attackers to execute code. An exposed /RestAPI/ImportTechnicians Struts action accepts an unauthenticated file upload into the installation's bin directory, and a second /RestAPI route invokes the uploaded executable. The flaw affects ServiceDesk Plus 11305 and earlier, ServiceDesk Plus MSP 10529 and earlier, and SupportCenter Plus 11012 through 11013, enabling full server compromise without credentials or user interaction.

CVSS severity9.8
Critical
EPSS probability93.30%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unauthenticated RCE in Zoho ManageEngine ServiceDesk Plus, ServiceDesk Plus MSP, and SupportCenter Plus allows remote attackers to execute code. An exposed /RestAPI/ImportTechnicians Struts action accepts an unauthenticated file upload into the installation's bin directory, and a second /RestAPI route invokes the uploaded executable. The flaw affects ServiceDesk Plus 11305 and earlier, ServiceDesk Plus MSP 10529 and earlier, and SupportCenter Plus 11012 through 11013, enabling full server compromise without credentials or user interaction.

The record

CVE
CVE-2021-44077
Published
Nov 29, 2021
Updated
Oct 21, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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