Unified Contact Center ExpressApplication · Cisco
CVE-2019-1888
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 Administration Web Interface of Cisco Unified Contact Center Express (Unified CCX) could allow an authenticated, remote attacker to upload arbitrary files and execute commands on the underlying operating system. To exploit this vulnerability, an attacker needs valid Administrator credentials. The vulnerability is due to insufficient restrictions for the content uploaded to an affected system. An attacker could exploit this vulnerability by uploading arbitrary files containing operating system commands that will be executed by an affected system. A successful exploit could allow the attacker to execute arbitrary commands with the privileges of the web interface and then elevate their privileges to root.
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 file upload vulnerability in Cisco Unified CCX Administration Web Interface allows authenticated attackers with Administrator credentials to upload arbitrary files containing OS commands. The insufficient content restrictions enable command execution with web interface privileges, followed by privilege escalation to root.
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 Contact Center ExpressApplication
= 11.6\(1\)= 11.6\(2\)= 12.0\(1\)
Unified Ip Interactive Voice ResponseApplication
= 11.6\(1\)= 11.6\(2\)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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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 the installed Cisco Unified CCX or UCCX IVR versionAccess the Cisco Unified CCX Administration Web Interface and navigate to the About page or system information section to view the installed software versionAffected if The version displayed is 11.6(1), 11.6(2), or 12.0(1) for Cisco Unified Contact Center Express, or 11.6(1) or 11.6(2) for Cisco Unified IP IVR
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Verify the Administration Web Interface is accessibleConfirm the Cisco Unified CCX Administration Web Interface is reachable on the network by accessing its URL (typically https://<hostname>/ccxadmin) from an authorized endpointAffected if The web interface is exposed and accepts connections from untrusted networks or unauthorized IP addresses
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Confirm Administrator role accounts existCheck the local user database or Active Directory integration for Administrator-level accounts in the Cisco Unified CCX Administration Web Interface under User Management or Security settingsAffected if There are Administrator accounts configured, especially if credentials may be weak, shared, or known to untrusted personnel
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Review file upload functionality in the Administration interfaceLog into the Administration Web Interface and examine the System, Tools, or Configuration menus for any file upload or import features (such as scripts, prompts, or configuration files)Affected if File upload or import features are present and accessible to Administrator users
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Inspect the web server for suspicious uploaded filesCheck the document root directories of the Cisco Unified CCX web server (typically under /var/www or similar paths) for unexpected .jsp, .php, .sh, or executable files that were not authored by your administration teamAffected if Unexpected script or executable files are found in the web directory structure, particularly in publicly accessible paths
Your environment is affected if you are running Cisco Unified Contact Center Express versions 11.6(1), 11.6(2), or 12.0(1), or Cisco Unified IP IVR versions 11.6(1) or 11.6(2), and the Administration Web Interface with Administrator accounts is accessible.
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 Cisco patch for CVE-2019-1888 when available. Restrict Administrator access to trusted personnel only and monitor for unauthorized file uploads or suspicious command execution.
Fix this in Unified Contact Center Express
Scoped from the published advisory
- Consultation6.0 h
- Implementation4.0 h
- Testing6.0 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 $5,664.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-1888 — 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-2019-1888 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