Adobe Issues Emergency Patch for Actively Exploited Acrobat Reader Zero-Day

#cybersecurity #infosec

Summary

Adobe released emergency patches for CVE-2026-34621, a critical prototype pollution vulnerability in Acrobat and Reader that is being actively exploited to run arbitrary code via malicious PDF files.

Take Action:

Update your Adobe Acrobat and Reader immediately because attackers are already using this flaw to take over computers through simple PDF files. If you cannot patch right away, use a browser-based PDF viewer as a temporary safety measure and disable Javascript in your Adobe Acrobat and Reader.

Read the full article on BeyondMachines

This article was originally published on BeyondMachines