CVE-2021-33207
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 · uneditedThe HTTP client in MashZone NextGen through 10.7 GA deserializes untrusted data when it gets an HTTP response with a 570 status code.
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 · moderate confidenceMashZone NextGen's built-in HTTP client contains a deserialization vulnerability where it blindly deserializes data from HTTP responses when receiving a 570 status code. Combined with the critical CVSS 9.8 rating, this indicates the deserialized data is likely processed without proper validation, potentially allowing remote code execution if an attacker can intercept or inject malicious HTTP responses.
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<= 10.7CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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 MashZone NextGen installation and versionLocate the MashZone NextGen installation directory and check the version file or application banner. Common locations include the Software AG installation directory under MashZone or similar product folders.Affected if The installed version is 10.7 or any version lower than 10.7.
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Confirm the HTTP client component is in useReview the MashZone NextGen configuration files for any configured HTTP client endpoints, integrations, or data feed connections that use the built-in HTTP client functionality.Affected if The HTTP client feature is actively configured or enabled for receiving data from external endpoints.
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Inspect HTTP response handling configurationsExamine MashZone configuration or application logs for any handlers or processors that respond to or process HTTP status code 570 responses from external sources.Affected if The application is set up to process HTTP 570 status code responses from untrusted or external endpoints.
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Assess network exposure of HTTP client endpointsReview network access controls, firewall rules, or proxy configurations that govern which external hosts the MashZone HTTP client can communicate with.Affected if The HTTP client can reach untrusted or publicly accessible network endpoints without proper TLS/credential validation.
You are affected if MashZone NextGen version 10.7 or lower is installed with the built-in HTTP client enabled and configured to receive HTTP 570 responses from untrusted network sources.
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 the vendor patch for MashZone NextGen when available. Until then, restrict network access to trusted endpoints only, implement WAF rules to inspect and block suspicious 570 responses, and consider disabling the HTTP client functionality if not required.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-33207 — 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-2021-33207 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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