Critical 9.8Published Apr 12, 2017

CVE-2017-3063Adobe Flash Player versions 25.0.0.127 and earlier have an exploitable use after free vulnerability in the ActionScript2 NetStream class.

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Adobe Flash Player versions 25.0.0.127 and earlier have an exploitable use after free vulnerability in the ActionScript2 NetStream class. Successful exploitation could lead to arbitrary code execution.

CVSS: 9.8 CRITICAL (v3.0, NVD)CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-416
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

adobe flash_player adobe:flash_player	through 25.0.0.127; through 25.0.0.127; through 25.0.0.127; through 25.0.0.127	NVD

References

References

http://www.securityfocus.com/bid/97551	third-party-advisory, vdb-entry
http://www.securitytracker.com/id/1038225
https://access.redhat.com/errata/RHSA-2017:0934
https://helpx.adobe.com/security/products/flash-player/apsb17-10.html	vendor-advisory
https://security.gentoo.org/glsa/201704-04
http://www.zerodayinitiative.com/advisories/ZDI-17-279/	third-party-advisory, vdb-entry

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.