Adobe has released emergency updates to address a critical security vulnerability (CVE-2026-34621) in Acrobat Reader that is actively being exploited in the wild. The flaw, related to prototype pollution, could enable attackers to execute arbitrary malicious code on affected versions of Acrobat DC, Acrobat Reader DC, and Acrobat 2024 for both Windows and macOS, with Adobe confirming awareness of ongoing exploitation.
https://thehackernews.com/2026/04/adobe-patches-actively-exploited.html