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CISA KEV · ACTIVELY EXPLOITED
HIGH severity

CVE-2012-5054 — Flash Player

HIGH

CVE-2012-5054 is a high-severity (CVSS 8.8) CWE-190 vulnerability in adobe flash player. It is in CISA's Known Exploited Vulnerabilities catalog (added 2022-06-08) — treat it as actively exploited and patch now. A fix is available — see the affected versions and patch details below.

Integer overflow in the copyRawDataTo method in the Matrix3D class in Adobe Flash Player before 11.4.402.265 allows remote attackers to execute arbitrary code via malformed arguments.

Published
Updated
Affected
1 product
Patched
See advisory
Exploits
3 known
Exploitation data as of Oct 23, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

  • Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2022-06-08. Federal agencies were required to remediate by 2022-06-22.
  • A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2012-5054.

EPSS Exploitation Probability

via FIRST.org ↗
21.2%probability of exploitation in next 30 days
Moderate Risk0.00%
Lower risk than most CVEs98th percentile — riskier than 98% of all scored CVEsHighest risk
4.57%34.1%63.7%93.2%76.6%21.2%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2012-5054 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 394,803 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Counts from FIRST.org, log-scaled.

Description

Integer overflow in the copyRawDataTo method in the Matrix3D class in Adobe Flash Player before 11.4.402.265 allows remote attackers to execute arbitrary code via malformed arguments.

Affected Products

1 product · 1 configurations
Application
flash playeradobe
< 11.4.402.265
range
Exploits & PoCs
3

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every adobe flash player deployment and check each version against the affected-products list above.

  2. Fix

    Apply the adobe flash player security patch or hotfix for CVE-2012-5054 on the affected version, following the vendor advisory for your exact build.

  3. Workarounds

    Constrain what reaches the vulnerable code: limit the size and shape of untrusted input, isolate the affected component in a sandboxed or least-privileged process, and enable the platform's memory-safety mitigations (ASLR, stack protector, hardened allocator) so an out-of-bounds access is more likely to fail closed than to be exploitable. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatCritical
ProductFixed inAdvisory
Supplementary for Red Hat Enterprise Linux 5flash-plugin-0:11.2.202.238-1.el5RHSA-2012:1203
Supplementary for Red Hat Enterprise Linux 6flash-plugin-0:11.2.202.238-1.el6RHSA-2012:1173

Frequently Asked Questions

Integer overflow in the copyRawDataTo method in the Matrix3D class in Adobe Flash Player before 11.4.402.265 allows remote attackers to execute arbitrary code via malformed arguments.
O3 Security · Runtime Protection

Is CVE-2012-5054 being exploited in your environment?

Detect and block the exploit chain at execution, on systems you cannot patch yet.

Actively Exploited: CVE-2012-5054: Flash Player (High 8.8)