CVE-2020-12527
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 · uneditedAn issue was discovered in MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2. Improper access validation allows a logged in user to shutdown or reboot devices in his account without having corresponding permissions.
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 confidenceThe vulnerability is a broken access control issue where the application fails to properly validate user permissions before allowing device shutdown or reboot operations. An authenticated user can trigger these privileged actions on devices within their account without having the required authorization level, exploiting insufficient authorization checks in the affected firmware versions.
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<= 2.11.2<= 2.11.2<= 2.11.2<= 2.11.2CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 the installed product and versionLocate the Mbconnect24, Mymbconnect24, Myrex24, or Myrex24.virtual application and determine its installed version number. Check the application GUI, about page, or system information section for the version string.Affected if The installed version is 2.11.2 or any earlier version within the 2.x release line.
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Confirm the specific product variantDetermine which of the four affected products is deployed: Mbconnectline Mbconnect24, Mbconnectline Mymbconnect24, Helmholz Myrex24, or Helmholz Myrex24.virtual. Each shares the same vulnerability in affected versions.Affected if The product is any of these four variants with version 2.11.2 or lower.
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Check user account configurationReview the user management section to see what user roles and authorization levels are defined in the system. Note which users are assigned to which permission tiers.Affected if Multiple user accounts exist with different permission levels, and the application allows authenticated (any role) access to shutdown/reboot endpoints.
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Test or inspect shutdown/reboot authorizationAttempt to access the device shutdown or reboot functionality using a user account that lacks administrative privileges, or review the application code/API endpoints to verify if authorization checks are performed before executing shutdown/reboot commands.Affected if Lower-privileged authenticated users can trigger shutdown or reboot operations without proper permission validation, or no server-side authorization check is found on shutdown/reboot endpoints.
You are affected if the installed product is any variant of Mbconnect24 or Myrex24 with version 2.11.2 or lower, and the application allows non-administrative users to access shutdown or reboot functionality.
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.
From vendor dataImplement proper role-based access control (RBAC) checks that verify the user has explicit permission to perform shutdown/reboot operations before executing these commands. Ensure authorization is validated server-side on every privileged action endpoint.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-12527 — 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-2020-12527 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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- Version or environment caveats, and links to real fixes
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