Telepresence Video Communication Server SoftwareApplication · Cisco
CVE-2015-4319
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 · uneditedThe password-change feature in the administrative web interface in Cisco TelePresence Video Communication Server (VCS) Expressway X8.5.1 improperly performs authorization, which allows remote authenticated users to reset arbitrary active-user passwords via unspecified vectors, aka Bug ID CSCuv12338.
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 confidenceThe Cisco TelePresence VCS Expressway X8.5.1 administrative web interface contains an authorization flaw in its password-change feature. Authenticated users can reset passwords for arbitrary active users, bypassing proper authorization checks. This constitutes a vertical privilege escalation where standard users can modify administrative or other users' credentials.
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 Video Communication Server SoftwareApplication
= x8.5.1CVSS 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
- Authentication
- Single
- Confidentiality
- None
- Integrity
- Partial
- Availability
- Partial
AV:N/AC:L/Au:S/C:N/I:P/A:P
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 VCS software versionLog into the Cisco TelePresence VCS administrative web interface and navigate to the About page or check the login landing page for the version number. Alternatively, use the CLI command 'version' to display the installed software version.Affected if The installed version is exactly x8.5.1
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Verify admin web interface is enabledCheck if the administrative web interface is accessible by attempting to reach the VCS login page at the standard HTTPS port (typically port 443). Review system administration settings via CLI using 'xconfiguration httpd' or through the web interface under System > Administration.Affected if The administrative web interface is enabled and reachable on the network
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Confirm user authentication is activeDetermine if local user accounts or LDAP authentication is configured and active on the VCS. Check User settings in the web interface or use CLI command 'user' to list configured users.Affected if Standard (non-administrator) user accounts exist and are able to authenticate to the system
You are affected if your Cisco TelePresence VCS Expressway runs exactly version X8.5.1, the administrative web interface is accessible, and standard authenticated users can access the password change functionality.
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 CSCuv12338 or upgrade to a Cisco VCS version beyond X8.5.1 that contains the fixed authorization logic. Restrict administrative web interface access to trusted networks until the patch is applied.
Fix this in Telepresence Video Communication Server Software
Scoped from the published advisory
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-4319 — 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-2015-4319 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
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