HOMEVULNERABILITIESCVE-2021-44675
CRITICAL

CVE-2021-44675

CWE-287Published: December 20, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Zoho ManageEngine ServiceDesk Plus MSP before 10.5 Build 10534 is vulnerable to unauthenticated remote code execution due to a filter bypass in which authentication is not required.

NVD Source

Technical Analysis

CVE-2021-44675 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

zohocorp1 product(s)
manageengine servicedesk plus msp
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://pitstop.manageengine.com/portal/en/community/topic/security-advisory-authentication-bypass-vulnerabilities-in-servicedesk-plus-msp-that-could-lead-to-remote-code-execution
ADVISORYhttps://pitstop.manageengine.com/portal/en/community/topic/security-advisory-authentication-bypass-vulnerabilities-in-servicedesk-plus-msp-that-could-lead-to-remote-code-execution

All References (2)

→
https://pitstop.manageengine.com/portal/en/community/topic/security-advisory-authentication-bypass-vulnerabilities-in-servicedesk-plus-msp-that-could-lead-to-remote-code-executionVendor Advisory
→
https://pitstop.manageengine.com/portal/en/community/topic/security-advisory-authentication-bypass-vulnerabilities-in-servicedesk-plus-msp-that-could-lead-to-remote-code-executionVendor Advisory

Quick Facts

CVE IDCVE-2021-44675
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-287
CISA KEVNo
Affected1 vendor(s)
PublishedDec 20, 2021

Related CVEs (CWE-287)

CVE-2021-39296
10.0
CVE-2021-32637
10.0
CVE-2019-1867
10.0
CVE-2019-12643
10.0
CVE-2019-16649
10.0
CVE-2008-2833
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-44675 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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