CVE-2020-35561
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 MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2. There is an SSRF in the HA module allowing an unauthenticated attacker to scan for open ports.
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 confidenceThis is a Server-Side Request Forgery (SSRF) vulnerability in the HA (High Availability) module of mymbCONNECT24, mbCONNECT24, and Helmholz myREX24 products. An unauthenticated attacker can induce the server to make arbitrary HTTP requests, enabling port scanning of internal network resources.
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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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 product and versionLocate the installed mbCONNECT24, mymbCONNECT24, myREX24, or myREX24.virtual application and determine its exact version number. This is typically available in the application itself, the installer, or system documentation.Affected if The installed version is 2.11.2 or earlier (any version <= 2.11.2).
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Confirm HA module is in useCheck whether the High Availability (HA) module is configured or enabled in the affected installation. This may be visible in the application's admin interface, configuration files, or system logs.Affected if The HA module is active or configured on the system.
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Verify network accessibility of management interfaceDetermine if the web-based management interface is exposed to untrusted networks. Check firewall rules, NAT configurations, or reverse proxy settings that control access to the application.Affected if The management interface is accessible from networks other than trusted internal networks, allowing unauthenticated attackers to reach it.
A user is affected if they are running version 2.11.2 or earlier of any affected product with the HA module enabled and the management interface exposed to untrusted networks.
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 dataApply vendor patch v2.11.3 or later which addresses this vulnerability. Until patched, restrict network access to the management interface using firewall rules to limit exposure to unauthenticated attackers.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-35561 — 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-2020-35561 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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- 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
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