Cve-2026-34621

Vulnerability 2026-04-12
Adobe Acrobat Reader Zero-Day CVE-2026-34621: Prototype Pollution RCE Exploited Since December
Adobe patches APSB26-43 after confirming CVE-2026-34621, a CVSS 9.6 prototype pollution flaw in Acrobat Reader actively exploited via malicious PDFs since at least December 2025.
adobe acrobat pdf rce zero-day prototype-pollution cve-2026-34621 active-exploitation

Adobe Acrobat Reader Zero-Day CVE-2026-34621: Prototype Pollution RCE Exploited Since December