Unified Contact Center EnterpriseApplication · Cisco
CVE-2025-20242
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 Cloud Connect component of Cisco Unified Contact Center Enterprise (CCE) could allow an unauthenticated, remote attacker to read and modify data on an affected device. This vulnerability is due to a lack of proper authentication controls. An attacker could exploit this vulnerability by sending crafted TCP data to a specific port on an affected device. A successful exploit could allow the attacker to read or modify data on the affected device.
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 confidenceA critical vulnerability in Cisco Unified Contact Center Enterprise's Cloud Connect component allows unauthenticated remote attackers to read and modify data due to missing authentication controls. The attack vector is sending crafted TCP packets to a specific port on the affected device.
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 EnterpriseApplication
= 12.6\(2\)es2CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.
-
Identify Cisco Unified Contact Center Enterprise installationCheck system inventory or running processes for Cisco Unified Contact Center Enterprise componentsAffected if The product is not Cisco Unified Contact Center Enterprise
-
Verify installed version is exactly 12.6(2)es2Use Cisco command-line interface or administrative console to check the exact version number of Unified Contact Center EnterpriseAffected if Version is 12.6(2)es2
-
Confirm Cloud Connect component is enabledCheck Cloud Connect configuration status in Cisco Unified Contact Center Enterprise admin interface or configuration filesAffected if Cloud Connect component is active and configured
-
Assess network exposure of Cloud Connect TCP portReview firewall rules and network accessibility for the Cloud Connect listening portAffected if Cloud Connect port is accessible from untrusted networks
Environment is affected only if running exactly version 12.6(2)es2 with Cloud Connect enabled and the service port exposed to network
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 Cisco's official patch when available and implement network segmentation to restrict access to the Cloud Connect port until the fix is deployed.
Fix this in Unified Contact Center Enterprise
Scoped from the published advisory
- Consultation6.0 h
- Implementation12.0 h
- Testing10.0 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 $8,928.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-20242 — 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-2025-20242 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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