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Adobe fixes PDF zero-day security bug that hackers have exploited for months

ID: 274e36fc-3db1-5d4c-ac5b-938c8fa7c9c4

STIX ID: report--274e36fc-3db1-5d4c-ac5b-938c8fa7c9c4

Feed Name: TechCrunch Security News

Threat Score
80/100

Date Published: 2026-04-14

Date Updated: 2026-04-23

Author: Zack Whittaker

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Adobe patched a zero-day vulnerability (CVE-2026-34621) in Acrobat DC, Reader DC and Acrobat 2024 that has been actively exploited for months via malicious PDFs to achieve remote code execution and potentially full system control; researcher Haifei Li and VirusTotal samples exposed the exploit and Adobe urges users to update.

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