CVE-2015-8421

Use-after-free vulnerability in Adobe Flash Player before 18.0.0.268 and 19.x and 20.x before 20.0.0.228 on Windows and OS X and before 11.2.202.554 on Linux…

published December 10, 2015

CVSS
—
EPSS
43%
Percentile
98.7
In the wild
Unconfirmed
What it is

🚨 A sneaky use-after-free vulnerability in Adobe Flash can open the door for attackers to execute arbitrary code! 🔥 Think of this like a restaurant accidentally giving someone an old menu after they’ve already closed their kitchen — the cooks might still be in there, but they shouldn’t be! When the memory isn’t properly managed, it could allow for unexpected behaviors, just like a rogue chef deciding to cook whatever they like. If exploited, an attacker could gain full control and execute any code on compromised systems, potentially stealing sensitive information or causing serious disruptions. This is no small deal, as it could lead to everything from data breaches to complete system takeovers.

Put simply

Think of this like a restaurant accidentally giving someone an old menu after they’ve already closed their kitchen — the cooks might still be in there, but they shouldn’t be! When the memory isn’t properly managed, it could allow for unexpected behaviors, just like a rogue chef deciding to cook whatever they like. This use-after-free vulnerability occurs in Adobe Flash Player and Adobe AIR when the memory is freed but not properly handled, allowing an attacker to run arbitrary code by manipulating the flow of the application.

What to do

If exploited, an attacker could gain full control and execute any code on compromised systems, potentially stealing sensitive information or causing serious disruptions. This is no small deal, as it could lead to everything from data breaches to complete system takeovers. To protect your systems, immediately upgrade to Adobe Flash Player version 18.0.0.268 or newer, and for Adobe AIR, ensure you’re on version 20.0.0.204 or later. Regularly check your software for updates to keep vulnerabilities at bay! You’ve got this! By taking these steps, you’ll be well on your way to safeguarding your systems. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.43408 · 98.7th percentile
Published
2015-12-10T02:00Z
EPSS history
Timeline
  • 10 DEC 02:00Z
    Use-after-free vulnerability in Adobe Flash Player before 18.0.0.268 and 19.x and 20.x before 20.0.0.228 on Windows and OS X and before 11.2.202.554 on Linux…
    cvelistv5