CVE-2023-23553
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 · uneditedControl By Web X-400 devices are vulnerable to a cross-site scripting attack, which could result in private and session information being transferred to the attacker.
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 Control By Web X-400 devices allows attackers to inject malicious scripts into the web interface. When executed in users' browsers, these scripts can exfiltrate private information and hijack sessions.
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< 2.8CVSS 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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Access the X-400 web interface firmware version pageLog into the Control By Web X-400 device admin panel and navigate to the System Status, Device Info, or About page where firmware version information is typically displayedAffected if The firmware version displayed is below 2.8 (e.g., 2.7, 2.6, etc.)
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Verify the exact firmware version numberLocate the firmware version field in the web interface and record the full version number (e.g., 2.7.1, 2.6.0)Affected if The version begins with 2.7 or lower, or shows a version number less than 2.8
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Confirm this is an X-400 model deviceCheck the device model identifier in the web interface or physical device label to confirm it is specifically an X-400 modelAffected if The device is an X-400 model running firmware below version 2.8
The environment is affected if the Control By Web X-400 device is running firmware version 2.7 or any version lower than 2.8.
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.
dbcve · scoped2.8
Implement proper input validation and output encoding on all user-supplied data within the X-400 web interface. Apply vendor firmware updates if available, or contact vendor for patch guidance.
Firmware version 2.8 or later
- Identify the current firmware version of the Control By Web X-400 device by accessing the device's web interface or administrative console
- Navigate to the device's firmware update or system settings section
- Download the firmware version 2.8 or later from the official Control By Web website or authorized distribution channel
- Upload and apply the firmware update to the X-400 device following the manufacturer's documented upgrade procedure
- After upgrading, verify the new firmware version is installed correctly
- Test the device functionality to ensure normal operation post-upgrade
- Consider changing session credentials as a precautionary measure given the XSS vulnerability
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-23553 — 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-2023-23553 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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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