What’s Vulnerable › Vulnerabilities

CVE-2018-4877

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 8.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-02-06 · updated 2026-06-17
• Weakness: CWE-416

Description

A use-after-free vulnerability was discovered in Adobe Flash Player before 28.0.0.161. This vulnerability occurs due to a dangling pointer in the Primetime SDK related to media player's quality of service functionality. A successful attack can lead to arbitrary code execution.

Affected products

• Adobe Flash Player 24.0.0.186 and earlier.: before 28.0.0.161 — fixed in 28.0.0.161
• RedHat Enterprise Linux Desktop: 6.0
• RedHat Enterprise Linux Server: 6.0
• RedHat Enterprise Linux Workstation: 6.0

How to fix

Upgrade to a fixed version: Adobe Flash Player 24.0.0.186 and earlier. 28.0.0.161. Check the vendor advisory for mitigations.

References

• http://www.securityfocus.com/bid/102930
• https://access.redhat.com/errata/RHSA-2018:0285
• https://helpx.adobe.com/security/products/flash-player/apsb18-03.html
• http://www.securityfocus.com/bid/102930
• https://access.redhat.com/errata/RHSA-2018:0285
• https://helpx.adobe.com/security/products/flash-player/apsb18-03.html

Get alerted when CVE-2018-4877 or the next vulnerability affects your stack