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#1 The Hacker News general April 09, 2026 at 11:15 UTC

Adobe Reader Zero-Day Exploited via Malicious PDFs Since December 2025

By [email protected] (The Hacker News)

AI Summary

Threat actors have been exploiting a zero-day vulnerability in Adobe Reader using maliciously crafted PDF documents since December 2025, with the first malicious PDF "Invoice540.pdf" appearing on VirusTotal on November 28, 2025. EXPMON researcher Haifei Li describes this as a highly sophisticated PDF exploit that remains unpatched, allowing attackers to compromise systems through weaponized documents.

Read full article → https://thehackernews.com/2026/04/adobe-reader-zer…

Relevance score: 95.0/100

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