CVE-2021-28564: 
Adobe Acrobat Reader Continuous vulnerability analysis and mitigation

Acrobat Reader DC versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier), and 2017.011.30194 (and earlier) are affected by an Out-of-bounds Write vulnerability within the ImageTool component. The vulnerability was discovered and assigned CVE-2021-28564, affecting multiple versions of Adobe's PDF reader software (NVD Database, CVE Database).

The vulnerability is classified as an Out-of-bounds Write (CWE-787) vulnerability within the ImageTool component. It received a CVSS v3.1 base score of 8.8 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating high severity across confidentiality, integrity, and availability impacts (NVD Database).

If successfully exploited, this vulnerability allows an unauthenticated attacker to achieve arbitrary code execution in the context of the current user. The exploitation requires user interaction, specifically requiring a victim to open a malicious file (NVD Database).

Adobe has released security updates to address this vulnerability. Users should update to the latest version of Adobe Acrobat and Reader DC to mitigate this security risk (Adobe Advisory).

The vulnerability was discovered and reported by Haboob Labs, demonstrating ongoing security research efforts in PDF document processing software (Adobe Advisory).