Telepresence Management SuiteApplication · Cisco
CVE-2023-20249
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 · uneditedA vulnerability in the web-based management interface of Cisco TelePresence Management Suite (TMS) Software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. This vulnerability is due to insufficient input validation by the web-based management interface. An attacker could exploit this vulnerability by inserting malicious data in a specific data field in the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.
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 confidenceThis is a stored XSS vulnerability in Cisco TelePresence Management Suite's web interface. An authenticated attacker can inject malicious JavaScript code into a specific data field that lacks proper input validation. When other users view this data in the interface, the malicious script executes in their browser context, potentially allowing session hijacking or sensitive information access.
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
Telepresence Management SuiteApplication
< 15.13.6CVSS 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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Check Cisco TMS versionAccess the Cisco TelePresence Management Suite web interface and navigate to Admin > System Overview or Help > About to view the installed version number. Alternatively, check the version displayed on the TMS login page.Affected if The installed version is lower than 15.13.6 (for example, 15.12.x, 15.11.x, or earlier)
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Verify web interface is accessibleConfirm that the TMS web interface is reachable by accessing the TMS server URL via HTTP/HTTPS from a browser or command-line tool (curl).Affected if The TMS web interface is exposed and accessible over the network
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Identify the vulnerable data fieldLocate user-modifiable data fields within the TMS web interface, particularly those involving device naming, location information, or contact details where data is stored and displayed back to other users.Affected if User-controllable text fields exist in the interface that accept input and display it to other authenticated users without visible sanitization indicators
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Check for existing XSS payloads in stored dataUse browser developer tools or a proxy (such as Burp Suite) to inspect HTTP responses when viewing stored data in TMS. Look for unescaped HTML tags or JavaScript in the response content.Affected if Stored data in TMS displays raw or partially encoded HTML/JavaScript characters instead of being properly escaped when viewed in the interface
A user is affected if their Cisco TMS installation is version 15.13.5 or lower and the web interface is accessible, since the stored XSS can be triggered when users view injected data in the interface.
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 · scoped15.13.6
Apply Cisco's available patches for TMS. Additionally, implement robust input validation and output encoding for all user-supplied data fields in the web interface, and consider Content Security Policy (CSP) headers to mitigate XSS execution.
Cisco TelePresence Management Suite version 15.13.6 or later
- 1. Identify the current version of Cisco TelePresence Management Suite by accessing the web-based management interface and navigating to the version information page
- 2. Navigate to the Cisco Software Download page (software.cisco.com) and locate Cisco TelePresence Management Suite (TMS)
- 3. Download version 15.13.6 or later from the Cisco download page
- 4. Review the TMS installation and upgrade guide for version 15.13.6 to understand prerequisites and procedures
- 5. Create a full backup of the current TMS configuration and database following Cisco's backup procedures
- 6. Stop all TMS services before initiating the upgrade
- 7. Run the installer for version 15.13.6 or later and follow the on-screen upgrade instructions
- 8. After upgrade completion, restart TMS services and verify the new version is running
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Telepresence Management Suite
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,888.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-20249 — 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-2023-20249 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
- No weaponised exploit code, or anything meant to cause harm
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