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Known exploited vulnerability · CISA KEV

CVE-2012-5054: Adobe Flash Player Integer Overflow Vulnerability

Adobe Flash Player contains an integer overflow vulnerability that allows remote attackers to execute code via malformed arguments.

CVE-2012-5054

Exploited in the wild. Fix this first.

CISA added it to the Known Exploited Vulnerabilities catalog on 2022-06-08: attackers are using it right now.

CISA KEV
Listed
Added 2022-06-08 · federal fix-by 2022-06-22
EPSS (30 days)
21%
Higher than 98% of CVEs · 2026-11-01
CVSS v3.1
8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What CISA says

Adobe Flash Player Integer Overflow Vulnerability

The impacted product is end-of-life and should be disconnected if still in use.

NVD description · published 2012-09-24

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.

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How to check if you are exposed to CVE-2012-5054

  1. Find every Adobe Flash Player system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
  2. Compare each version with the fixed versions in the vendor advisory. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
  3. Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2012-5054.

US federal agencies had to fix this by 2022-06-22. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.

Affected versions

Versions the National Vulnerability Database lists as vulnerable to CVE-2012-5054. Check the vendor advisory for the exact fixed builds before you sign anything off.

ProductVulnerable versions
Adobe Flash Playerbefore 11.4.402.265

Timeline

  1. · Published in the National Vulnerability Database
  2. · Added to CISA's Known Exploited Vulnerabilities catalog, 3,544 days after it was published
  3. · Fix-by date for US federal agencies, passed 1,593 days ago

Weakness type

More exploited Adobe vulnerabilities

CISA lists 83 exploited Adobe vulnerabilities. The closest matches:

Keep going

Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.

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