Vulnerability Database

383,463

Total vulnerabilities in the database

CVE-2021-44675 — zohocorp / manageengine_servicedesk_plus_msp

Improper Authentication

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.

  • Published: Dec 20, 2021
  • Updated: Sep 13, 2026
  • CVE: CVE-2021-44675
  • Severity: Critical
  • Exploit:
  • CISA KEV:

CVSS v3:

  • Severity: Critical
  • Score: 9.8
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/Au:N/C:P/I:P/A:P
Software Affected versions
zohocorp / manageengine_servicedesk_plus_msp <= 10.5
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10500
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10501
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10502
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10503
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10504
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10505
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10506
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10507
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10508
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10509
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10510
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10511
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10512
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10513
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10514
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10515
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10516
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10517
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10518
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10519
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10520
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10521
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10522
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10523
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10524
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10525
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10526
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10527
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10528
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10529
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10530
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10531
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10532
zohocorp / manageengine_servicedesk_plus_msp = 10.5-10533

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.