Webex Business SuiteApplication · Cisco
CVE-2019-1773
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 Cisco Webex Network Recording Player for Microsoft Windows and the Cisco Webex Player for Microsoft Windows could allow an attacker to execute arbitrary code on an affected system. The vulnerability exist because the affected software improperly validates Advanced Recording Format (ARF) and Webex Recording Format (WRF) files. An attacker could exploit this vulnerability by sending a user a malicious ARF or WRF file via 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.
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 confidenceThe vulnerability exists in Cisco Webex Network Recording Player and Cisco Webex Player for Microsoft Windows due to improper validation of Advanced Recording Format (ARF) and Webex Recording Format (WRF) files. An attacker can send a malicious ARF or WRF file to a user (via link or email attachment); when the user opens the file with the affected software, the attacker can execute arbitrary code on the victim's system.
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 Business SuiteApplication
< 39.2.205
Webex Business Suite LockdownApplication
< 33.6.11
Webex Meetings OnlineApplication
< 1.3.42
Webex Meetings ServerApplication
< 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 Webex player softwareOn the Windows system, open Programs and Features (or run 'appwiz.cpl') and look for Cisco Webex entries such as 'Cisco Webex Network Recording Player', 'Cisco Webex Player', 'Webex Business Suite', or similar Webex-related components.Affected if Any Cisco Webex player or recording player software is listed in installed programs
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Determine installed versionRight-click the identified Webex player entry in Programs and Features and select 'Change' or 'Properties', or look for version information in the application's about/help menu. Alternatively, locate the executable (typically in C:\Program Files\Webex or similar) and view its properties for version details.Affected if The displayed version number is lower than 39.2.205 for Webex Business Suite, lower than 33.6.11 for Webex Business Suite Lockdown, lower than 1.3.42 for Webex Meetings Online, or lower than 4.0 for Webex Meetings Server
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Verify ARF/WRF file handling capabilityCheck if the system has .arf or .wrf file associations registered to Webex player applications. Open Command Prompt and run 'assoc .arf' and 'assoc .wrf' to see if these extensions are mapped to Webex player executables.Affected if The .arf or .wrf file extensions are associated with Cisco Webex player executables on the system
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Confirm vulnerable code execution pathSearch for the Webex player executable (often named webex*.exe, playnbr.exe, or similar) in Program Files directories. If the player is present and can open recording files, the vulnerable code path exists.Affected if A Cisco Webex player executable exists on the system and is capable of processing ARF or WRF files
A user is affected if Cisco Webex player software is installed with a version lower than the affected ranges AND the system can process 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 data1.3.424.033.6.11
Organizations should deploy the Cisco patch/update for the Webex players to all affected Windows systems and educate users to avoid opening untrusted ARF/WRF file attachments.
Fix this in Webex Business Suite
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 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 $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-1773 — 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-2019-1773 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