Webex Business Suite 31Application · Cisco
CVE-2018-0264
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 Advanced Recording Format (ARF) files could allow an unauthenticated, remote attacker to execute arbitrary code on the system of a targeted user. An attacker could exploit this vulnerability by sending the user a link or email attachment with a malicious ARF file and persuading the user to follow the link or open the file. Successful exploitation could allow the attacker to execute arbitrary code on the user's system. This vulnerability affects Cisco WebEx Business Suite meeting sites, Cisco WebEx Meetings sites, Cisco WebEx Meetings Server, and Cisco WebEx ARF players. The following client builds of Cisco WebEx Business Suite (WBS31 and WBS32), Cisco WebEx Meetings, and Cisco WebEx Meetings Server are affected: Cisco WebEx Business Suite (WBS31) client builds prior to T31.23.4, Cisco WebEx Business Suite (WBS32) client builds prior to T32.12, Cisco WebEx Meetings with client builds prior to T32.12, Cisco WebEx Meeting Server builds prior to 3.0 Patch 1. Cisco Bug IDs: CSCvh85410, CSCvh85430, CSCvh85440, CSCvh85442, CSCvh85453, CSCvh85457.
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 memory corruption vulnerability in Cisco WebEx Network Recording Player allows unauthenticated remote attackers to execute arbitrary code by tricking users into opening specially crafted ARF (Advanced Recording Format) files. The vulnerability stems from insufficient validation of ARF file contents, enabling buffer overflow or similar memory manipulation during playback.
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 Suite 31Application
< t32.12
Webex Business Suite 32Application
< t31.23.4
Webex Meeting ServerApplication
< 3.0
Webex MeetingsApplication
< t32.12CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/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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Verify WebEx Network Recording Player is installedSearch for the WebEx player executable (typically atpplay.exe or similar ARF player) in Program Files directories, or check Add/Remove Programs for Cisco WebEx productsAffected if The player is installed and users can open ARF files
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Determine the installed WebEx versionOpen the WebEx player, then access Help > About, or right-click the executable and view Properties > Details for version informationAffected if The version is Cisco Webex Business Suite 31 < t32.12, Business Suite 32 < t31.23.4, Meeting Server < 3.0, or Meetings < t32.12
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Confirm ARF file handling is enabledCheck if the system can process .arf file extensions by default - locate sample ARF files or test file association in Windows ExplorerAffected if ARF files are associated with the WebEx player and can be opened without warning prompts
The environment is affected if Cisco WebEx Network Recording Player is installed with a version below the patched releases (t32.12, t31.23.4, or 3.0) and users can open untrusted ARF 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.
dbcve · scoped3.0
Apply vendor patches: upgrade Cisco WebEx Business Suite WBS31 to T31.23.4 or later, WBS32 and WebEx Meetings to T32.12 or later, and WebEx Meeting Server to 3.0 Patch 1 or later. Educate users to avoid opening untrusted ARF files from unknown sources.
WebEx client builds: T31.23.4 (WBS31), T32.12 (WBS32/Meetings); WebEx Meeting Server: 3.0 Patch 1
- Identify the specific Cisco WebEx product in use (WebEx Business Suite WBS31, WBS32, WebEx Meetings, or WebEx Meeting Server)
- Determine the current client build version from the WebEx client or meeting server
- For WebEx Business Suite WBS31 clients: upgrade to client build T31.23.4 or later
- For WebEx Business Suite WBS32 clients: upgrade to client build T32.12 or later
- For WebEx Meetings clients: upgrade to client build T32.12 or later
- For WebEx Meeting Server: upgrade to version 3.0 Patch 1 or later
- Verify the upgrade was successful by checking the client build number
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Webex Business Suite 31
Scoped from the published advisory
- Consultation4.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,544.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-0264 — 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-2018-0264 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