CVE-2026-34621: Adobe Acrobat and Reader Prototype Pollution Vulnerability

Added to the CISA Known Exploited Vulnerabilities catalog on 13 Apr 2026. Vendor: Adobe. Product: Acrobat and Reader.

Adobe Acrobat and Reader contain a prototype pollution vulnerability that allows for arbitrary code execution.

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. (due 27 Apr 2026)