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TechRadar
TechRadar
Sead Fadilpašić

HISTORICAL FACTS: Adobe issues emergency security patch reader and acrobat users need to update now | History Defined

The best free PDF reader.
  • Adobe patches Acrobat Reader zero‑day exploited since Dec 2025
  • CVE‑2026‑34621 enabled RCE via malicious PDFs
  • Users must update; no workarounds available, defenders urged to monitor traffic

Adobe has released a fix for a vulnerability in Acrobat Reader which was being exploited as a zero-day since December 2025.

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