High 8.8Published Jun 16, 2016

CVE-2016-4166Unspecified vulnerability in Adobe Flash Player 21.0.0.242 and earlier, as used in the Adobe Flash libraries in Microsoft Internet Explorer 10 and 11 and Microsoft Edge, has unknown impact and attack…

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

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It affects adobe flash_player_desktop_runtime and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Unspecified vulnerability in Adobe Flash Player 21.0.0.242 and earlier, as used in the Adobe Flash libraries in Microsoft Internet Explorer 10 and 11 and Microsoft Edge, has unknown impact and attack vectors, a different vulnerability than other CVEs listed in MS16-083.

CVSS: 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-787
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_desktop_runtime adobe:flash_player_desktop_runtime	through 21.0.0.242	NVD
adobe flash_player adobe:flash_player	through 18.0.0.352; through 21.0.0.242; through 21.0.0.242; through 21.0.0.242; through 11.2.202.621	NVD

References

References

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00031.html	broken-link
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00035.html	broken-link
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00038.html	broken-link
http://www.securitytracker.com/id/1036117	broken-link, third-party-advisory, vdb-entry
https://access.redhat.com/errata/RHSA-2016:1238	third-party-advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-083	patch, third-party-advisory
https://helpx.adobe.com/security/products/flash-player/apsb16-18.html	patch, vendor-advisory

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.