CVE-2021-27598
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 NetWeaver AS JAVA (Customer Usage Provisioning Servlet), versions - 7.31, 7.40, 7.50, allows an attacker to read some statistical data like product version, traffic, timestamp etc. because of missing authorization check in the servlet.
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 Customer Usage Provisioning Servlet in SAP NetWeaver AS JAVA versions 7.31, 7.40, and 7.50 lacks proper authorization validation, allowing unauthenticated attackers to access statistical metadata including product version, traffic patterns, and timestamps.
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= 7.31= 7.40= 7.50CVSS 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.
-
Identify if SAP NetWeaver AS Java is runningCheck running Java processes or services for SAP NetWeaver components. Look for SAP J2EE engine processes or check system inventory for SAP Java applications.Affected if The system is running SAP NetWeaver Application Server Java
-
Determine the installed SAP NetWeaver AS Java versionUse SAP transaction code SM51 to view the SAP System Version, or check the SAR file manifest, or query the SAP kernel version via SAP kernel tools.Affected if The installed version matches 7.31, 7.40, or 7.50 exactly
-
Locate the Customer Usage Provisioning ServletCheck the SAP J2EE engine configuration for servlet mappings. The servlet is typically deployed in the SAP J2EE Engine and may be accessible under paths containing 'UsageProvisioning' or 'Usage' in the URL structure.Affected if The Customer Usage Provisioning Servlet is deployed and accessible in the J2EE engine
-
Test servlet accessibility without authenticationAttempt to access the servlet URL directly without providing any SAP credentials. Use a web browser or HTTP tool to send an unauthenticated request to the servlet endpoint.Affected if The servlet responds with statistical metadata without requiring authentication
-
Verify authorization configuration for the servletCheck the SAP J2EE security configuration (via Visual Administrator or deployment descriptors) to determine if proper authorization checks are enforced on the Customer Usage Provisioning Servlet.Affected if No authorization constraints are configured or the servlet is mapped to an unconstrained security role
A user is affected if their system runs SAP NetWeaver AS Java versions 7.31, 7.40, or 7.50 AND the Customer Usage Provisioning Servlet is accessible without authentication.
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 relevant SAP security patch (refer to SAP Security Note) to enforce authorization checks on the Customer Usage Provisioning Servlet and restrict access to statistical data.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 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 $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-27598 — 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-2021-27598 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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