Adobe.Reader.CVE-2021-39844.Out.of.Bounds.Read

Description

This indicates an attack attempt to exploit an Out of Bounds Read Vulnerability in Adobe Acrobat and Reader.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted PDF file. Successful exploitation can potentially lead to information disclosure.

Affected Products

Adobe Acrobat DC Continuous for Windows 2021.005.20060 and earlier
Adobe Acrobat Reader DC Continuous for Windows 2021.005.20060 and earlier
Adobe Acrobat DC Continuous for macOS 2021.005.20058 and earlier
Adobe Acrobat Reader DC Continuous for macOS 2021.005.20058 and earlier
Adobe Acrobat 2020 Classic 2020 for Windows & macOS 2020.004.30006 and earlier
Adobe Acrobat Reader 2020 Classic 2020 for Windows & macOS 2020.004.30006 and earlier
Adobe Acrobat 2017 Classic 2017 for Windows & macOS 2017.011.30199 and earlier
Adobe Acrobat Reader 2017 Classic 2017 for Windows & macOS 2017.011.30199 and earlier

Impact

Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems.

Recommended Actions

Apply the most recent upgrade or patch from the vendor.
https://helpx.adobe.com/security/products/acrobat/apsb21-55.html

References