CVE-2021-28640 : What You Need to Know

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 Use-after-free vulnerability. This vulnerability could allow an attacker to execute arbitrary code in the context of the current user, with exploitation requiring user interaction.

Understanding CVE-2021-28640

This section delves into the details of the Adobe Acrobat Reader Use-After-Free Arbitrary Code Execution Vulnerability.

What is CVE-2021-28640?

CVE-2021-28640 is a Use-after-free vulnerability in Adobe Acrobat Reader that could be exploited by an authenticated attacker to execute arbitrary code on a victim's system.

The Impact of CVE-2021-28640

The impact of this vulnerability is rated as HIGH, with a CVSS base score of 7.3. It could result in the compromise of confidentiality, integrity, and availability of the affected system.

Technical Details of CVE-2021-28640

This section covers the technical aspects of the CVE-2021-28640 vulnerability.

Vulnerability Description

The Use-after-free vulnerability in Adobe Acrobat Reader could lead to arbitrary code execution by an attacker who interacts with a malicious file.

Affected Systems and Versions

Adobe Acrobat Reader DC versions 2021.005.20054 and earlier, 2020.004.30005 and earlier, and 2017.011.30197 and earlier are impacted by this vulnerability.

Exploitation Mechanism

Exploiting CVE-2021-28640 requires user interaction as an authenticated attacker needs a victim to open a specially crafted malicious file.

Mitigation and Prevention

In this section, we discuss the steps to mitigate and prevent the risks associated with CVE-2021-28640.

Immediate Steps to Take

Users are advised to update Adobe Acrobat Reader to the latest version to mitigate the risk of exploitation. Additionally, exercise caution while opening files from untrusted sources.

Long-Term Security Practices

To enhance security in the long run, users should practice safe browsing habits, avoid opening suspicious attachments, and keep software up to date.

Patching and Updates

Stay informed about security updates released by Adobe and promptly apply patches to address known vulnerabilities in Adobe Acrobat Reader.