CVE-2021-44650
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedZoho ManageEngine M365 Manager Plus before Build 4419 allows remote command execution when updating proxy settings through the Admin ProxySettings and Tenant ProxySettings components.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceM365 Manager Plus before Build 4419 contains a remote command execution vulnerability in the Admin ProxySettings and Tenant ProxySettings components. Attackers can execute arbitrary commands by manipulating proxy settings updates through these administrative interfaces.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 4.4= 4.4CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed M365 Manager Plus versionCheck the product's About or Version information panel within the M365 Manager Plus application interface, or locate the build/version file in the installation directoryAffected if The installed version is 4.4 or any version lower than 4.4 (the build number is below 4419)
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Verify ProxySettings component accessNavigate to the Admin ProxySettings and Tenant ProxySettings configuration areas within the M365 Manager Plus administrative consoleAffected if The ProxySettings interfaces are accessible and enabled in the environment
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Review proxy configuration for anomaliesInspect the current proxy configuration settings stored in the application database or configuration files, looking for unexpected proxy URLs, IP addresses, or portsAffected if Proxy settings contain unfamiliar or suspicious values, particularly external IP addresses or unusual ports not configured by your organization
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Check for unauthorized proxy modification logsReview M365 Manager Plus audit logs and administrative action logs for any proxy settings modifications, especially those initiated from unexpected IP addresses or outside normal administrative windowsAffected if There are proxy configuration changes that were not performed by authorized administrators
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Monitor for unexpected outbound connectionsInspect network traffic logs or firewall records for outbound connections from the M365 Manager Plus server to unusual external IP addresses, particularly on non-standard portsAffected if The server is establishing connections to unknown external addresses that may indicate command injection activity
The environment is affected if M365 Manager Plus is running version 4.4 or any version below 4.4 (build prior to 4419) and the ProxySettings administrative interfaces are accessible.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped4.4
Upgrade M365 Manager Plus to Build 4419 or later. If immediate patching is not possible, restrict administrative access to the ProxySettings components and monitor for suspicious proxy configuration changes.
Build 4419 or later (version 4.5 and above)
- Log in to ManageEngine M365 Manager Plus as an administrator
- Navigate to the Admin ProxySettings or Tenant ProxySettings component
- Ensure you are running build 4419 or later (version 4.5 or higher)
- If running an affected version (< 4.4 or = 4.4), download the latest version from the ManageEngine official website
- Stop the M365 Manager Plus service before upgrading
- Install the updated version (build 4419 or later)
- Restart the M365 Manager Plus service
- Verify the version by checking About or build information
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation1.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-44650 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-44650 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data