CVE-2009-4324VulnerabilityPublished 06/08/2022Updated 10/24/2026

CVE-2009-4324: Adobe Acrobat and Reader Use-After-Free Vulnerability

Affects Adobe Acrobat and ReaderSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 06/08/2022
KEV deadline: 06/22/2022
EPSS: 81.9% chance of exploitation in 30 days – higher than 99% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2009-4324 (opens in a new tab)

Description

CVE-2009-4324 is a use-after-free vulnerability in Adobe Acrobat and Reader that allows remote attackers to execute arbitrary code by opening a specially crafted PDF file. This vulnerability has been exploited in the wild. It affects Adobe Acrobat and Reader products, though specific affected versions are not detailed in the provided data.

Summary

This vulnerability involves a use-after-free condition in Adobe Acrobat and Reader. An attacker can craft a malicious PDF file that triggers this flaw, potentially leading to remote code execution on the victim's system. The vulnerability is identified as CWE-399 (use-after-free). Exploits leveraging this vulnerability have been observed in the wild, indicating active threat. No specific affected versions or patch information are provided in the input data.

Impact

Successful exploitation allows remote attackers to execute arbitrary code on affected systems by convincing users to open a malicious PDF file. This can lead to full compromise of the affected system. The vulnerability has been exploited in the wild, indicating a real and active threat.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor Adobe's security advisories for updates and apply patches promptly once available.

Weaknesses

CWE-399Unclassified weakness (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 12:03:46 UTC

Weaknesses

References

Related threats