CVE-2021-28551 Explained : Impact and Mitigation

Adobe Acrobat Pro DC is affected by an Out-of-bounds read vulnerability allowing remote code execution. Attackers could exploit this issue to execute arbitrary code in the context of the current user by tricking them into opening a malicious file.

Understanding CVE-2021-28551

This CVE impacts Adobe Acrobat Pro DC with certain versions affected by an Out-of-bounds read vulnerability, posing a risk of remote code execution.

What is CVE-2021-28551?

Adobe Acrobat Reader DC versions 2021.001.20155 (and earlier), 2020.001.30025 (and earlier), and 2017.011.30196 (and earlier) are susceptible to an Out-of-bounds read vulnerability. This flaw could be exploited by an unauthenticated attacker to achieve arbitrary code execution.

The Impact of CVE-2021-28551

The vulnerability has a CVSS base score of 7.8 (High) with confidentiality, integrity, and availability impacts rated as high. Successful exploitation allows attackers to execute arbitrary code in the context of the current user.

Technical Details of CVE-2021-28551

Adobe Acrobat Pro DC is affected by Out-of-bounds read vulnerability, allowing unauthorized remote code execution.

Vulnerability Description

The Out-of-bounds read vulnerability in Adobe Acrobat Pro DC versions enables attackers to execute arbitrary code in the context of the current user by leveraging a malicious file.

Affected Systems and Versions

Adobe Acrobat Reader DC versions 2021.001.20155, 2020.001.30025, and 2017.011.30196 (and earlier) are impacted by this vulnerability.

Exploitation Mechanism

Successful exploitation of CVE-2021-28551 requires a victim to open a specifically crafted malicious file, allowing remote code execution.

Mitigation and Prevention

To safeguard your systems from CVE-2021-28551, immediate action and long-term security practices are crucial.

Immediate Steps to Take

Update Adobe Acrobat Reader to the latest version and exercise caution while opening files from untrusted sources to mitigate the risk of exploitation.

Long-Term Security Practices

Regularly update software patches and maintain awareness of security best practices to prevent future vulnerabilities.

Patching and Updates

Always apply security patches promptly and stay informed of security advisories from Adobe to protect against known vulnerabilities.