Is CVE-2015-5123 actively exploited?

CVE-2015-5123 has no public evidence of in-the-wild exploitation as of 2025-11-17.

What is the CVSS score for CVE-2015-5123?

CVE-2015-5123 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2015-5123?

Patch guidance is available from redhat security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2015-5123.

Fix CVE-2015-5123 - CRITICAL redhat enterprise linux desktop

Q: Which products are affected by CVE-2015-5123?

16 products: redhat enterprise linux desktop, redhat enterprise linux desktop, redhat enterprise linux server, redhat enterprise linux server, redhat enterprise linux server eus, and 11 more.

Description

Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13.x through 13.0.0.302 on Windows and OS X, 14.x through 18.0.0.203 on Windows and OS X, 11.x through 11.2.202.481 on Linux, and 12.x through 18.0.0.204 on Linux Chrome installations 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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-416 · Use After Free CWE-416 · Use After Free

Metadata

Primary Vendor: REDHAT
Published: 7/14/2015
Last Modified: 11/17/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

redhat : enterprise_linux_desktopredhat : enterprise_linux_desktopredhat : enterprise_linux_serverredhat : enterprise_linux_serverredhat : enterprise_linux_server_eusredhat : enterprise_linux_workstationredhat : enterprise_linux_workstationopensuse : evergreensuse : linux_enterprise_desktopsuse : linux_enterprise_desktopsuse : linux_enterprise_desktopsuse : linux_enterprise_workstation_extensionadobe : flash_playeradobe : flash_playeradobe : flash_playeradobe : flash_player_desktop_runtime

Remediation Guidance

Executive Summary

View on NIST NVD