CVE-2021-27600
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 · uneditedSAP Manufacturing Execution (System Rules), versions - 15.1, 15.2, 15.3, 15.4, allows an authorized attacker to embed malicious code into HTTP parameter and send it to the server because SAP Manufacturing Execution (System Rules) tab does not sufficiently encode some parameters, resulting in Stored Cross-Site Scripting (XSS) vulnerability. The malicious code can be used for different purposes. e.g., information can be read, modified, and sent to the attacker. However, availability of the server cannot be impacted.
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 confidenceStored Cross-Site Scripting (XSS) vulnerability in SAP Manufacturing Execution System Rules tab where HTTP parameters are not properly encoded, allowing attackers to inject malicious scripts that persist on the server and execute in other users' browsers.
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= 15.1= 15.2= 15.3= 15.4CVSS 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
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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 SAP Manufacturing Execution installationCheck your system for SAP ME components. On the application server, look for SAP ME web application files in the deployed applications directory (commonly under /sapme* or /SAPME* paths in the web container), or check SAP LM/ME service entries in the system.Affected if SAP Manufacturing Execution web application is present and accessible
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Verify installed versionAccess the SAP Manufacturing Execution web interface and check the version through the system information page (usually /sapme/webgui or similar endpoint), or check the SAP ME installed software version via SAP LMND (SAP Solution Manager) if available.Affected if Version equals 15.1, 15.2, 15.3, or 15.4
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Confirm Rules tab is accessibleLog into the SAP ME web application and navigate to the Rules tab within the system configuration area. Verify the Rules functionality is enabled and accessible to users.Affected if The Rules tab is present and users can access it to create or modify rules with HTTP parameters
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Inspect HTTP parameter handling in Rules tabUse browser developer tools to capture network traffic when submitting data through the Rules tab. Examine the HTTP request parameters sent to the server and check if they are properly encoded or if raw user input appears in the request.Affected if User-supplied input in Rules tab parameters is reflected in the response without encoding or sanitization
You are affected if SAP Manufacturing Execution versions 15.1 through 15.4 are installed and the Rules tab with HTTP parameter input is accessible and does not encode user input.
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 SAP security patches for CVE-2021-27600 and implement output encoding for System Rules parameters to prevent script injection.
- Consultation4.0 h
- Implementation4.0 h
- Testing4.0 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 $3,968.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-27600 — 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-2021-27600 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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