CVE-2021-21033
Adobe Acrobat Reader Continuous vulnerability analysis and mitigation

Overview

CVE-2021-21033 is a Use After Free vulnerability affecting Adobe Acrobat Reader DC versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier), and 2017.011.30188 (and earlier). The vulnerability was disclosed on February 9, 2021, and affects both Windows and macOS operating systems (NVD).

Technical details

The vulnerability is classified as a Use After Free (CWE-416) issue with a CVSS v3.1 base score of 8.8 (HIGH). The vulnerability has a vector string of CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating network accessibility, low attack complexity, no privileges required, and user interaction required for exploitation (NVD).

Impact

If successfully exploited, this vulnerability allows an unauthenticated attacker to achieve arbitrary code execution in the context of the current user. The impact spans across confidentiality, integrity, and availability, with potential high severity consequences in each aspect (CVE).

Mitigation and workarounds

Adobe has released security updates to address this vulnerability through their security bulletin APSB21-09. Users should update to the latest version of Adobe Acrobat and Reader to mitigate this vulnerability (Adobe Advisory).

Additional resources


SourceThis report was generated using AI

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