CVE-2021-42721 Explained : Impact and Mitigation

Adobe Bridge versions 11.1.1 and earlier are affected by a use-after-free vulnerability that could lead to arbitrary code execution.

Understanding CVE-2021-42721

Adobe Bridge Use After Free vulnerability could result in the execution of arbitrary code in the context of the current user.

What is CVE-2021-42721?

CVE-2021-42721 is a use-after-free vulnerability in Acrobat Bridge versions 11.1.1 and earlier, allowing for arbitrary code execution.

The Impact of CVE-2021-42721

CVSS Base Score: 7.8 (High)
Impact: High impact on confidentiality, integrity, and availability.
User Interaction: Required for exploitation by opening a malicious file.

Technical Details of CVE-2021-42721

Adobe Bridge Use After Free vulnerability technical specifics.

Vulnerability Description

The vulnerability lies in the processing of Format event actions, potentially leading to arbitrary code execution.

Affected Systems and Versions

Affected Product: Adobe Bridge
Affected Versions:
Version <= 11.1.1
Version 'None' (unspecified)

Exploitation Mechanism

Exploitation requires a victim to open a malicious file, triggering the vulnerability.

Mitigation and Prevention

Steps to take to mitigate and prevent CVE-2021-42721.

Immediate Steps to Take

Update Adobe Bridge to the latest version.
Avoid opening files from untrusted sources.

Long-Term Security Practices

Educate users on safe file handling practices.
Implement security awareness training.

Patching and Updates

Regularly update software with the latest security patches.