Vulnerability Database

325,773

Total vulnerabilities in the database

CVE-2021-44675

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: Nov 16, 2025
  • CVE: CVE-2021-44675
  • Severity: Critical
  • Exploit:

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 From Fixed in
zohocorp / manageengine_servicedesk_plus_msp 10.5-10519 10.5-10519.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10515 10.5-10515.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10516 10.5-10516.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10517 10.5-10517.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10518 10.5-10518.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10507 10.5-10507.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10508 10.5-10508.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10509 10.5-10509.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10510 10.5-10510.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10511 10.5-10511.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10512 10.5-10512.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10513 10.5-10513.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10514 10.5-10514.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10500 10.5-10500.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10501 10.5-10501.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10502 10.5-10502.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10503 10.5-10503.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10504 10.5-10504.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10505 10.5-10505.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10506 10.5-10506.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10520 10.5-10520.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10521 10.5-10521.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10530 10.5-10530.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10525 10.5-10525.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10526 10.5-10526.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10527 10.5-10527.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10528 10.5-10528.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10529 10.5-10529.x
zohocorp / manageengine_servicedesk_plus_msp - 10.5.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10522 10.5-10522.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10523 10.5-10523.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10524 10.5-10524.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10531 10.5-10531.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10532 10.5-10532.x
zohocorp / manageengine_servicedesk_plus_msp 10.5-10533 10.5-10533.x

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.