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RealplayerApplication · Realnetworks

CVE-2011-2945

HIGH · 9.3 CVSS v2.0 Published 2011-08-18
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
Heap-based buffer overflow in RealNetworks RealPlayer 11.0 through 11.1 and 14.0.0 through 14.0.5 and RealPlayer SP 1.0 through 1.1.5 allows remote attackers to execute arbitrary code via a crafted SIPR stream.

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

Heap-based buffer overflow vulnerability in RealNetworks RealPlayer's handling of SIPR streams allows remote attackers to execute arbitrary code by delivering a specially crafted malicious stream.

MitigationUpdate to a patched version of RealPlayer, or remove/disable RealPlayer if updates are unavailable. Avoid opening untrusted media files or streams.

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
RealplayerApplication
Affected:= 11.0= 11.1= 14.0.0= 14.0.1= 14.0.2= 14.0.3= 14.0.4= 14.0.5
Realplayer SpApplication
Affected:= 1.0.0= 1.0.1= 1.0.2= 1.0.5= 1.1= 1.1.1= 1.1.2= 1.1.3= 1.1.4= 1.1.5

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. Check if RealPlayer is installed
    On Windows, check the registry key HKEY_LOCAL_MACHINE\SOFTWARE\RealNetworks\RealPlayer\Version or look for RealPlayer.exe in Program Files. On Mac, check /Applications for RealPlayer.app
    Affected if RealPlayer is found on the system
  2. Identify installed RealPlayer version
    Right-click RealPlayer.exe, select Properties, then Details tab to view File Version. Or run 'realplay -version' from command line if available
    Affected if Version matches 11.0, 11.1, 14.0.0-14.0.5 for RealPlayer or 1.0.0-1.1.5 for RealPlayer SP
  3. Verify SIPR stream handling capability exists
    Check if the SIPR codec or streaming module is present. Look for sipr.dll or related SIPR files in the RealPlayer installation directory under the Plugins or Codecs folder
    Affected if SIPR codec files exist in the RealPlayer installation directory
  4. Confirm RealPlayer is configured to handle media streams
    Open RealPlayer settings and check if streaming protocols (RTSP, SIPR) are enabled under Preferences or Media Settings
    Affected if Streaming functionality is enabled

User is affected if RealPlayer or RealPlayer SP is installed with a version matching 11.0-11.1 or 14.0.0-14.0.5 (RealPlayer) or 1.0.0-1.1.5 (RealPlayer SP) and SIPR streaming capability is present and enabled.

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

Update to a patched version of RealPlayer, or remove/disable RealPlayer if updates are unavailable. Avoid opening untrusted media files or streams.

Recommended fix Moderate confidence

RealPlayer 14.0.7 or later (latest available RealPlayer release)

  1. 1. Uninstall the affected RealPlayer installation (versions 11.0-11.1, 14.0.0-14.0.1, or RealPlayer SP 1.0-1.1.5)
  2. 2. Download the latest available RealPlayer version from the official RealNetworks website or authorized distribution channels
  3. 3. Verify the downloaded installer checksum against published values if available
  4. 4. Install the latest RealPlayer version (14.0.7 or later recommended)
  5. 5. Apply any available Windows updates after installation to ensure system integrity
Caveat RealPlayer has been discontinued by RealNetworks; ensure alternative media playback solutions are available if continuing use is not viable

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

Fix this in Realplayer 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
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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-2011-2945 in production — separate from our analysis above.

No notes yet

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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