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Flash PlayerApplication · Adobe

CVE-2011-2458

HIGH · 9.3 CVSS v2.0 Published 2011-11-11
Fix available
A fix is available. Upgrade to 3.1.0.4880 / 10.3.183.11 or later.
See remediation →
100/100
Remediation priority · Urgent
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
Adobe Flash Player before 10.3.183.11 and 11.x before 11.1.102.55 on Windows, Mac OS X, Linux, and Solaris and before 11.1.102.59 on Android, and Adobe AIR before 3.1.0.4880, when Internet Explorer is used, allows remote attackers to bypass the cross-domain policy via a crafted web site.

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
How this class of weakness works · CWE-264

A legacy NVD category covering weaknesses where permissions or privileges are assigned, checked, or dropped incorrectly, so an action ends up running with more access than it should. It is an umbrella label from older records, not a single flaw. The remedy depends on the specific case, but the throughline is least privilege with explicit, checked transitions wherever privilege changes.

General guidance for the permissions, privileges & access controls class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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:>= 10.0, < 10.3.183.11>= 11.0, < 11.1.102.55>= 11.0, < 11.1.102.59
Adobe AirApplication
Affected:>= 3.0, < 3.1.0.4880

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

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 3.1.0.4880 / 10.3.183.11 / 11.1.102.55 or later
Fixed in 3.1.0.488010.3.183.1111.1.102.55
Vendor patch www.adobe.com →
Recommended fix High confidence

Flash Player 10.3.183.11, Flash Player 11.1.102.55 (Windows/Mac/Linux/Solaris), Flash Player 11.1.102.59 (Android), or Adobe AIR 3.1.0.4880 depending on product and platform

  1. 1. Determine the currently installed Adobe Flash Player version by navigating to 'About Flash Player' in the right-click context menu or visiting https://www.adobe.com/software/flash/about/
  2. 2. Determine the currently installed Adobe AIR version from the system's installed programs list
  3. 3. For Flash Player 10.x users: Download and install version 10.3.183.11 from the Adobe bulletin APSB11-28
  4. 4. For Flash Player 11.x users on Windows/Mac OS X/Linux/Solaris: Download and install version 11.1.102.55 from the Adobe bulletin APSB11-28
  5. 5. For Flash Player 11.x users on Android: Download and install version 11.1.102.59 from the Adobe bulletin APSB11-28
  6. 6. For Adobe AIR users: Download and install version 3.1.0.4880 from the Adobe bulletin APSB11-28
  7. 7. Restart any browsers or applications using Flash Player or Adobe AIR after installation
  8. 8. Verify the installed version matches the fixed release by checking the version again

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

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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-2011-2458 in production — separate from our analysis above.

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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
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