dbcve.org
Webex Recording Format PlayerApplication · Cisco

CVE-2011-4004

HIGH · 9.3 CVSS v2.0 Published 2011-10-27
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 · unedited
Buffer overflow in the ATAS32 processing functionality in the Cisco WebEx Recording Format (WRF) player T26 before SP49 EP40 and T27 before SP28 allows remote attackers to execute arbitrary code via a crafted WRF file.

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 confidence

Buffer overflow vulnerability in the ATAS32 processing functionality of Cisco WebEx Recording Format (WRF) player allows remote code execution via specially crafted WRF files. The vulnerability affects T26 before SP49 EP40 and T27 before SP28.

MitigationApply vendor patches (T26 SP49 EP40 or later, T27 SP28 or later) to update the WebEx WRF player and ensure users do not open untrusted WRF files from unknown sources.

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 Recording Format PlayerApplication
Affected:= 26= 27= 27.10= 27.12= 27.13

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
M
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:M/Au:N/C:C/I:C/A:C

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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm WebEx WRF Player installation
    Check for the presence of the WebEx Recording Format Player on the system. Look for executable files named 'ATAS32.exe', 'webex.exe', or similar WebEx player binaries in common installation directories such as C:\Program Files\WebEx or C:\Program Files (x86)\WebEx. Also check Add/Remove Programs or Programs and Features for installed Cisco WebEx components.
    Affected if The WebEx Recording Format Player is installed on the system.
  2. Identify the WebEx player version family
    Right-click on the WebEx player executable (typically ATAS32.exe), select Properties, and check the Details tab for version information. Alternatively, run the executable with a version flag if available, or use Windows PowerShell to query installed programs: Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*' | Where-Object {$_.DisplayName -like '*WebEx*' -or $_.DisplayName -like '*WRF*'} | Select-Object DisplayName, DisplayVersion.
    Affected if The installed version belongs to the T26 or T27 product family.
  3. Determine exact version and patch level
    Examine the full version string obtained from the previous step. For T26 family versions, identify the Service Pack (SP) and Emergency Patch (EP) numbers. For T27 family versions, identify the Service Pack number. Compare the version format against the affected ranges: T26 versions before SP49 EP40, and T27 versions before SP28.
    Affected if The installed version is T26 with patch level below SP49 EP40, or T27 with patch level below SP28.
  4. Assess WRF file processing exposure
    Determine if the WebEx WRF Player is configured to automatically open .wrf files or if users routinely open WRF file attachments from email or web downloads. Check file association settings for .wrf extension in Windows Default Programs or Registry under HKCR\.wrf. Review whether the ATAS32 processing component is active by examining the player's feature set or logs.
    Affected if The player handles .wrf files and users can open untrusted WRF files.

A user is affected if the Cisco WebEx Recording Format Player is installed with a T26 version before SP49 EP40 or a T27 version before SP28, and the ATAS32 processing feature can be triggered by opening specially crafted WRF files.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor patches (T26 SP49 EP40 or later, T27 SP28 or later) to update the WebEx WRF player and ensure users do not open untrusted WRF files from unknown sources.

Recommended fix High confidence

T26 SP49 EP40 or later / T27 SP28 or later

  1. Identify the current version of Cisco WebEx Recording Format Player installed (T26 or T27)
  2. For T26 users: Upgrade to version SP49 EP40 or later
  3. For T27 users: Upgrade to version SP28 or later
  4. Obtain the updated player from Cisco's official download site or through your organization's WebEx administrator
  5. Verify the installation by checking the player version after upgrade

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Webex Recording Format Player Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,984.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2011-4004 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2011-4004 in production — separate from our analysis above.

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.

What this is

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.

What belongs here
  • 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