CISA KEV catalog
Confirmed active exploitation.
Listed in CISA's catalog of Known Exploited Vulnerabilities: attackers are using it in real attacks. Patch it with priority.
- Name
- Adobe Flash Player Use-After-Free Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- The impacted product is end-of-life and should be disconnected if still in use.
Description
Use-after-free vulnerability in the ByteArray class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13.x through 13.0.0.296 and 14.x through 18.0.0.194 on Windows and OS X and 11.x through 11.2.202.468 on Linux allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted Flash content that overrides a valueOf function, as exploited in the wild in July 2015.
Affected products
adobe: flash player; apple: mac os x; microsoft: windows; linux: linux kernel; redhat: enterprise linux desktop; redhat: enterprise linux eus; redhat: enterprise linux server; redhat: enterprise linux server aus; redhat: enterprise linux server from rhui; redhat: enterprise linux workstation; opensuse: evergreen; opensuse: opensuse; suse: linux enterprise desktop; suse: linux enterprise workstation extension
References10
- helpx.adobe.com/security/products/flash-player/apsa15-03.html Broken LinkPatchVendor Advisory
- helpx.adobe.com/security/products/flash-player/apsb15-16.html Broken LinkPatchVendor Advisory
- helpx.adobe.com/security/products/flash-player/apsa15-03.html Broken LinkPatchVendor Advisory
- helpx.adobe.com/security/products/flash-player/apsb15-16.html Broken LinkPatchVendor Advisory
- packetstormsecurity.com/files/132600/Adobe-Flash-Player-ByteArr… ExploitThird Party AdvisoryVDB Entry
- packetstormsecurity.com/files/132600/Adobe-Flash-Player-ByteArr… ExploitThird Party AdvisoryVDB Entry
- blog.trendmicro.com/trendlabs-security-intelligence/unpatched-f… Broken Link
- lists.opensuse.org/opensuse-security-announce/2015-07/msg00015.… Mailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2015-07/msg00016.… Mailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2015-07/msg00017.… Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 99% percentile: 100 · as of 2 November 2026
- CWE
- CWE-416