TechApr 12, 2026updated5 minAdobe Acrobat Reader Patches Actively Exploited Zero-Day (CVE-2026-34621 / APSB26-43)Adobe released a patch on April 11, 2026 for a Prototype Pollution RCE in Acrobat Reader that had been exploited since December 2025. CVSS 8.6, Priority 1. Apply within 72 hours.SecurityAdobeVulnerabilityRCEPDFZero-DayPatch