CVE-2009-4324KEV · OVERDUE

Adobe Acrobat and Reader Use-After-Free Vulnerability

High · published December 15, 2009

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 7.8. It is confirmed in active exploitation. It sits in the 99.7th percentile for exploit probability.

1584
days past CISA
deadline
CVSS v3.1
7.8
EPSS
82%
Percentile
99.7
In the wild
Confirmed
What it is

🚨 A crafty PDF can turn Adobe Reader into a hacker's playground! This use-after-free vulnerability is making waves, allowing attackers to execute arbitrary code just by opening a file. ⚡ Think of it like a barista handing out coffee orders without checking if the name matches — when you get someone else's drink with a sneaky shot of espresso, it can leave you jittery and confused! If this vulnerability is exploited, attackers can run any code they want on your system, potentially stealing sensitive information or installing malicious software. It's a chilling scenario where a seemingly harmless PDF morphs into a gateway for chaos!

Put simply

Think of it like a barista handing out coffee orders without checking if the name matches — when you get someone else's drink with a sneaky shot of espresso, it can leave you jittery and confused! This use-after-free vulnerability in the Doc.media.newPlayer method allows attackers to exploit ZLib compressed streams in crafted PDF files, leading to remote code execution without user consent.

What to do

If this vulnerability is exploited, attackers can run any code they want on your system, potentially stealing sensitive information or installing malicious software. It's a chilling scenario where a seemingly harmless PDF morphs into a gateway for chaos! Update Adobe Reader and Acrobat to the fixed versions: 9.3 or higher for 9.x users and 8.2 or higher for 8.x users. It’s critical to ensure that your software is always up to date to avoid falling victim to such attacks. 🛡️ You've got this! By following these steps, you can fortify your defenses and keep the hackers at bay! 🔒

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.81880 · 99.7th percentile
Published
2009-12-15T02:00Z
KEV added
2022-06-08 · due 2022-06-22
EPSS history
Timeline
  • 08 JUN 00:00Z
    Added to CISA KEV — remediate by Jun 22
    kev
  • 15 DEC 02:00Z
    Use-after-free vulnerability in the Doc.media.newPlayer method in Multimedia.api in Adobe Reader and Acrobat 9.x before 9.3, and 8.x before 8.2 on Windows and…
    cvelistv5