Simply opening a PDF could trigger this Adobe Reader zero-day
ID: 1ec2d7f9-1809-5fb3-8673-e953d641c0ca
STIX ID: report--1ec2d7f9-1809-5fb3-8673-e953d641c0ca
Feed Name: Malwarebytes Blog
Threat Score
**Adobe Reader zero-day (CVE-2026-34621) exploited in the wild:** Malicious PDFs can be used to steal local files and pull remote JavaScript for execution, potentially escaping Adobe's sandbox; affected Acrobat/Reader versions are listed and emergency updates are available—users and administrators are advised to apply patches and monitor for related network indicators.
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