zero-day 5
- April 2026 Patch Tuesday: SharePoint Zero-Day Among 167 CVEs Fixed
- ShowDoc RCE Flaw CVE-2025-0520 Actively Exploited on Unpatched Servers
- Anthropic Restricts Mythos Preview After Model Autonomously Exploits Zero-Days in Major OS and Browsers
- Adobe Patches Actively Exploited Acrobat Reader RCE — CVE-2026-34621
- Adobe Reader Zero-Day Exploited via Malicious PDFs Since December 2025