Webex Network Recording PlayerApplication · Cisco
CVE-2020-3194
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 Cisco Webex Network Recording Player for Microsoft Windows and Cisco Webex Player for Microsoft Windows could allow an attacker to execute arbitrary code on an affected system. The vulnerability exists due to insufficient validation of certain elements with a Webex recording stored in either the Advanced Recording Format (ARF) or the Webex Recording Format (WRF). An attacker could exploit this vulnerability by sending a user a malicious ARF or WRF file through a link or email attachment and persuading the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the targeted user.
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 vulnerability in Cisco Webex Network Recording Player and Cisco Webex Player for Windows allows arbitrary code execution due to insufficient validation of elements within ARF or WRF recording files. An attacker can embed malicious content in a recording file and achieve code execution by persuading a user to open the file with the vulnerable player.
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
Webex Network Recording PlayerApplication
< 40.2< 39.5.18
Webex MeetingsApplication
>= 39.5, < 39.5.18
Webex Meetings OnlineApplication
< 1.3.48
Webex Meetings ServerApplication
< 4.0= 4.0CVSS 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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 installed Cisco Webex productLocate Cisco Webex software on the Windows system. Look for Cisco Webex Network Recording Player, Cisco Webex Meetings, Cisco Webex Meetings Server, or related Webex Meeting Center components in installed programs.Affected if Any of these products are installed
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Determine the installed versionOpen Windows Settings > Apps & features, right-click the installed Webex program, and select Properties to view the version, or check the program's Help > About dialog.Affected if The version cannot be determined or is visible in the program interface
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Compare version against affected ranges for Webex Network Recording PlayerIf Cisco Webex Network Recording Player is installed, check if version is below 40.2 or below 39.5.18.Affected if Version is < 40.2 or < 39.5.18
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Compare version against affected ranges for Cisco Webex MeetingsIf Cisco Webex Meetings is installed, check if version is >= 39.5 but < 39.5.18.Affected if Version is >= 39.5 and < 39.5.18
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Compare version against affected ranges for Webex Meetings Online or ServerIf Cisco Webex Meetings Online or Cisco Webex Meetings Server is in use, check if the client version is < 1.3.48 (Online) or if server version is < 4.0 or equals 4.0.Affected if Online client < 1.3.48 or server version < 4.0 or = 4.0
A user is affected if they have Cisco Webex Network Recording Player, Cisco Webex Meetings, Cisco Webex Meetings Online, or Cisco Webex Meetings Server installed with a version matching the affected ranges, and they open untrusted ARF or WRF recording files.
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 data1.3.484.039.5.18
Update Cisco Webex Network Recording Player and Cisco Webex Player to the latest patched version; avoid opening untrusted or unexpected ARF/WRF recording files from unknown sources.
Fix this in Webex Network Recording Player
Scoped from the published advisory
- Consultation1.0 h
- Implementation2.0 h
- Testing1.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,424.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-3194 — 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-2020-3194 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