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CVE-2016-4121

CRITICAL

Use-after-free vulnerability in Adobe Flash Player before 18.0.0.352 and 19.x through 21.x before 21.0.0.242 on Windows and OS X and before 11.2.202.621 on Linux allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2016-1097, CVE-2016-1106, CVE-2016-1107, CVE-2016-1108, CVE-2016-1109, CVE-2016-1110, CVE-2016-4108, and CVE-2016-4110.

Published: Jun 16, 2016 Modified: Jun 17, 2026
CWE-416

CVSS Metrics

CVSSv3
Attack Vector: NETWORK Attack Complexity: LOW Privileges Required: NONE User Interaction: NONE Scope: UNCHANGED Confidentiality Impact: HIGH Integrity Impact: HIGH Availability Impact: HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products (9)

Vendor Product Version
adobe flash_player *
adobe flash_player *
adobe flash_player *
adobe air_sdk_\&_compiler *
adobe air_sdk *
adobe flash_player *
adobe flash_player *
adobe flash_player_desktop_runtime *
adobe air_desktop_runtime *

GitHub Security Advisory GHSA-gj4r-qpq9-xp3h

Use-after-free vulnerability in Adobe Flash Player before 18.0.0.352 and 19.x through 21.x before...

Risk Scores

CVSS Score 9.8 / 10
EPSS Score 10.00%

Top 5% most likely to be exploited

Threat Score 42.2 / 100

Data Sources

NVD EPSS GitHub