CVE-2021-28550
Description
Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by a Use After Free vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Summary dbcve.org
A Use After Free vulnerability in Adobe Acrobat Reader DC allows an unauthenticated attacker to achieve arbitrary code execution by crafting a malicious PDF file that, when opened by a victim, triggers the memory corruption. The vulnerability affects versions 2021.001.20150 and earlier, 2020.001.30020 and earlier, and 2017.011.30194 and earlier.
Mitigation
Update Adobe Acrobat Reader DC to the latest patched version. Until patched, warn users not to open untrusted PDF files and consider disabling JavaScript in Acrobat Reader as a defense-in-depth measure.