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Flash PlayerApplication · Adobe

CVE-2015-8426

HIGH · 10.0 CVSS v2.0 Published 2015-12-10
Fix available
A fix is available. Upgrade to after 19.0.0.241 or later.
See remediation →
100/100
Remediation priority · Urgent
Public exploit Remotely reachable No privileges Zero-click Patch available

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
Use-after-free vulnerability in Adobe Flash Player before 18.0.0.268 and 19.x and 20.x before 20.0.0.228 on Windows and OS X and before 11.2.202.554 on Linux, Adobe AIR before 20.0.0.204, Adobe AIR SDK before 20.0.0.204, and Adobe AIR SDK & Compiler before 20.0.0.204 allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2015-8048, CVE-2015-8049, CVE-2015-8050, CVE-2015-8055, CVE-2015-8056, CVE-2015-8057, CVE-2015-8058, CVE-2015-8059, CVE-2015-8061, CVE-2015-8062, CVE-2015-8063, CVE-2015-8064, CVE-2015-8065, CVE-2015-8066, CVE-2015-8067, CVE-2015-8068, CVE-2015-8069, CVE-2015-8070, CVE-2015-8071, CVE-2015-8401, CVE-2015-8402, CVE-2015-8403, CVE-2015-8404, CVE-2015-8405, CVE-2015-8406, CVE-2015-8410, CVE-2015-8411, CVE-2015-8412, CVE-2015-8413, CVE-2015-8414, CVE-2015-8420, CVE-2015-8421, CVE-2015-8422, CVE-2015-8423, CVE-2015-8424, CVE-2015-8425, CVE-2015-8427, CVE-2015-8428, CVE-2015-8429, CVE-2015-8430, CVE-2015-8431, CVE-2015-8432, CVE-2015-8433, CVE-2015-8434, CVE-2015-8435, CVE-2015-8436, CVE-2015-8437, CVE-2015-8441, CVE-2015-8442, CVE-2015-8447, CVE-2015-8448, CVE-2015-8449, CVE-2015-8450, CVE-2015-8452, and CVE-2015-8454.

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

Use-after-free vulnerability in Adobe Flash Player and Adobe AIR that allows attackers to execute arbitrary code via unspecified vectors. The flaw occurs when the software continues to use memory after it has been freed, leading to potential code execution.

MitigationUpdate Adobe Flash Player to version 18.0.0.268 or later (Windows/OS X) or 11.2.202.554 or later (Linux), and Adobe AIR to 20.0.0.204 or later. Note: Adobe Flash is end-of-life; consider removal if possible.

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
Flash PlayerApplication
Affected:<= 11.2.202.548<= 18.0.0.261= 19.0.0.185= 19.0.0.207= 19.0.0.226= 19.0.0.245
Air SdkApplication
Affected:<= 19.0.0.241
Air Sdk \& CompilerApplication
Affected:<= 19.0.0.241
AirApplication
Affected:<= 19.0.0.241

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
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:L/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. Identify installed Adobe Flash Player version on Windows
    Check the Windows Registry key HKLM\SOFTWARE\Macromedia\FlashPlayer\Version or HKLM\SOFTWARE\WOW6432Node\Macromedia\FlashPlayer\Version using regedit or reg query command
    Affected if The version number is 11.2.202.548 or lower, 18.0.0.261 or lower, or exactly 19.0.0.185, 19.0.0.207, 19.0.0.226, or 19.0.0.245
  2. Identify installed Adobe Flash Player version on macOS
    Check the file /Library/Application Support/Adobe/Flash Player/Asset/Version/ or inspect the Flash Player.plugin bundle info inside /Library/Internet Plug-Ins/
    Affected if The version number is 11.2.202.548 or lower, 18.0.0.261 or lower, or exactly 19.0.0.185, 19.0.0.207, 19.0.0.226, or 19.0.0.245
  3. Identify installed Adobe Flash Player version on Linux
    Check the version using the command rpm -q flash-player or dpkg -l | grep flash, or examine /usr/lib/flash-plugin/ directory
    Affected if The version number is 11.2.202.548 or lower (Linux-specific threshold)
  4. Identify installed Adobe AIR version
    On Windows, check Add/emove Programs or the registry HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\AIR for the Version string. On macOS, check /Applications/Adobe AIR Installer.app or system_profiler SPApplicationsDataType
    Affected if The version number is 19.0.0.241 or lower
  5. Check for Adobe AIR SDK or AIR SDK & Compiler installations
    Look for AIR SDK in the installed development tools directory or check the SDK's readme or version file within the SDK folder (commonly named version.properties or similar)
    Affected if The SDK version is 19.0.0.241 or lower

If any installed Adobe Flash Player version falls within 11.2.202.548 or lower, 18.0.0.261 or lower, or exactly 19.0.0.185/207/226/245, or any Adobe AIR/SDK version is 19.0.0.241 or lower, the environment is affected by this CVE.

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
Upgrade available Upgrade to a release after 19.0.0.241
Vendor patch helpx.adobe.com →
Interim mitigation

Update Adobe Flash Player to version 18.0.0.268 or later (Windows/OS X) or 11.2.202.554 or later (Linux), and Adobe AIR to 20.0.0.204 or later. Note: Adobe Flash is end-of-life; consider removal if possible.

Recommended fix High confidence

Adobe Flash Player 18.0.0.268 (or 20.0.0.228 for 19.x/20.x), Adobe AIR 20.0.0.204

  1. Identify the currently installed Adobe Flash Player version (e.g., via 'about:plugins' in a browser or the Adobe version checker).
  2. Identify the currently installed Adobe AIR version (via Add/Remove Programs on Windows, macOS Utilities, or the Linux package manager).
  3. Uninstall the existing Flash Player and AIR installations using the appropriate OS removal tools.
  4. Download the patched Adobe Flash Player version 18.0.0.268 (or for the 19.x/20.x line, version 20.0.0.228) from the official Adobe security bulletin APSB15-32: https://helpx.adobe.com/security/products/flash-player/apsb15-32.html.
  5. Download the patched Adobe AIR and AIR SDK version 20.0.0.204 from the same bulletin page.
  6. Install the new Flash Player by running the downloaded installer and following the prompts.
  7. Install the new Adobe AIR runtime (and SDK/Compiler if applicable) using the corresponding installer.
  8. Restart any browsers or applications that rely on Flash Player to ensure the updated version is loaded.
Caveat Upgrading Flash Player may cause incompatibility with legacy content that requires older Flash versions; test any legacy applications or consider alternative solutions.

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

Fix this in Flash Player Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
5.0 hours of engineering $860
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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-2015-8426 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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  • No spam, self-promotion, credentials, or personal data