CVE-2021-28636 Explained : Impact and Mitigation

Adobe Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier), and 2017.011.30197 (and earlier) are affected by an Uncontrolled Search Path Element vulnerability. This vulnerability could allow an attacker with access to the victim's C:/ folder to execute arbitrary code in the context of the current user through the exploitation of this issue, which requires user interaction.

Understanding CVE-2021-28636

This section provides insights into the nature and potential impact of the Adobe Acrobat Reader vulnerability.

What is CVE-2021-28636?

CVE-2021-28636 is an Uncontrolled Search Path Element vulnerability affecting Adobe Acrobat Reader DC versions, allowing attackers to execute arbitrary code by manipulating the victim's C:/ directory.

The Impact of CVE-2021-28636

The vulnerability poses a high risk with a CVSS base score of 7.3. Attackers can achieve high impact on confidentiality, integrity, and availability with low privilege requirements and user interaction.

Technical Details of CVE-2021-28636

Explore the technical aspects and scope of the Adobe Acrobat Reader vulnerability.

Vulnerability Description

The vulnerability stems from uncontrolled search paths, enabling attackers to execute code with elevated privileges by exploiting user file interactions.

Affected Systems and Versions

Adobe Acrobat Reader DC versions 2021.005.20054, 2020.004.30005, and 2017.011.30197 are confirmed to be affected.

Exploitation Mechanism

Exploiting the vulnerability requires users to interact with a malicious file to trigger arbitrary code execution.

Mitigation and Prevention

Discover actionable steps to mitigate the risk posed by CVE-2021-28636.

Immediate Steps to Take

Users should update to the latest secure versions, avoid opening suspicious files, and refrain from sharing unauthorized resources.

Long-Term Security Practices

Regularly update Adobe Acrobat Reader, educate users on safe browsing habits, and implement robust cybersecurity measures.

Patching and Updates

Stay informed about security patches and advisories from Adobe, ensuring timely application of updates to protect against known vulnerabilities.