Adobe has released an emergency security update for Acrobat Reader to fix a vulnerability, tracked as CVE-2026-34621, that has been exploited in zero-day attacks since at least December. The flaw ...

Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. This voice experience is generated by AI. Learn more. This ...

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 ...

A cybersecurity researcher is urging users to upgrade Adobe Acrobat Reader after a fix was released yesterday for a remote code execution zero-day with a public in-the-wild proof-of-concept exploit.