Unified Communications ManagerApplication · Cisco
CVE-2017-3821
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 serviceability page of Cisco Unified Communications Manager could allow an unauthenticated, remote attacker to conduct reflected cross-site scripting (XSS) attacks. More Information: CSCvc49348. Known Affected Releases: 10.5(2.14076.1). Known Fixed Releases: 12.0(0.98000.209) 12.0(0.98000.478) 12.0(0.98000.609).
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 confidenceA reflected cross-site scripting (XSS) vulnerability exists in the serviceability page of Cisco Unified Communications Manager. An unauthenticated, remote attacker can craft malicious URLs containing JavaScript that gets executed in the victim's browser when they access the serviceability page.
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
Unified Communications ManagerApplication
= 10.5\(2.14076.1\)CVSS 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:3.0/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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Identify Cisco Unified Communications Manager installationLocate the Cisco Unified Communications Manager installation in your environment and confirm its presence. This is typically found on dedicated appliances or virtual machines running Cisco UC software.Affected if The product is not installed, you are not affected by this specific CVE.
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Check the installed version numberUse the system's administrative interface, command line, or version lookup method to determine the exact version of Cisco Unified Communications Manager installed. Compare this against the affected version 10.5(2.14076.1).Affected if Your installed version matches exactly 10.5(2.14076.1), you are running a potentially affected version.
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Verify serviceability page accessibilityDetermine if the serviceability web interface is accessible from the network. Check network ACLs, firewall rules, or access controls that permit or restrict access to the /serviceability endpoint or page.Affected if The serviceability page is exposed to untrusted networks, the XSS could be exploited by unauthenticated remote attackers.
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Confirm serviceability feature is enabledCheck the Cisco Unified Communications Manager configuration to verify whether the serviceability feature or service is currently enabled on the system.Affected if The serviceability feature is disabled, the vulnerable attack surface is not present.
You are affected if you have Cisco Unified Communications Manager version 10.5(2.14076.1) installed with the serviceability page enabled and accessible, as this creates the conditions for an unauthenticated remote attacker to exploit the reflected XSS.
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 dataUpgrade Cisco Unified Communications Manager to version 12.0(0.98000.209), 12.0(0.98000.478), 12.0(0.98000.609), or a later fixed release. As a compensating control, restrict network access to the serviceability page to trusted admin networks only.
Fix this in Unified Communications Manager
Scoped from the published advisory
- Consultation4.0 h
- Implementation4.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,504.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-3821 — 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-2017-3821 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
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