adobe-reader

Adobe Reader Had a Zero-Day in the Wild for Four Months Before Anyone Patched It

John Z Black Apr 11, 2026

Vulnerabilities & Patching #adobe-reader #zero-day #cve-2026-34621 #pdf-security #javascript-engine

CVE-2026-34621 was sitting in the wild since November 2025. Adobe patched it in April 2026. That's a four-month window where opening the wrong PDF could get you owned.