CVE-2023-43763
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 · uneditedCertain WithSecure products allow XSS via an unvalidated parameter in the endpoint. This affects WithSecure Policy Manager 15 on Windows and Linux.
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 confidenceCross-Site Scripting (XSS) vulnerability in WithSecure Policy Manager 15 allows attackers to inject malicious scripts via an unvalidated parameter in an endpoint. The vulnerability stems from insufficient input validation on user-supplied data, which is then reflected in the application's response without proper encoding.
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= 15.00CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/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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Confirm WithSecure Policy Manager installationLocate and inspect the Policy Manager installation directory or check installed programs on the system. Look for files or registry entries related to 'WithSecure Policy Manager' or 'F-Secure Policy Manager'.Affected if The product is installed and the version is exactly 15.00
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Verify installed version numberUse the system's program management interface, command-line tools, or check product-specific version information files. Compare the installed version against the affected range.Affected if The installed version is exactly 15.00 (the specific version mentioned as affected)
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Confirm web management interface is accessibleTest network accessibility to the Policy Manager web console port (commonly ports 80/443 or the configured HTTP/HTTPS listener). Attempt to reach the management URL from a browser or curl request.Affected if The web interface is accessible over HTTP/HTTPS - the XSS payload would be delivered through an HTTP request to the affected endpoint
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Identify endpoint exposureReview HTTP traffic logs or web server access logs for requests to Policy Manager endpoints. The vulnerability exists in an endpoint that reflects user-supplied input without validation.Affected if The affected endpoint is exposed and accepts user-supplied parameters via HTTP GET or POST requests
A system is affected if WithSecure Policy Manager version 15.00 is installed with its web management interface accessible, as the XSS vulnerability exists in the endpoint parameter handling of that specific version.
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 Policy Manager 15 when available. Until then, implement WAF rules to filter malicious script payloads in HTTP requests targeting affected endpoints, and restrict administrative access to trusted networks.
- Consultation2.0 h
- Implementation1.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-43763 — 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-2023-43763 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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