CISA description
Adobe Acrobat and Reader contain a prototype pollution vulnerability that allows for arbitrary code execution.
CVE-2026-34621
Adobe · Acrobat and Reader
Adobe Acrobat and Reader Prototype Pollution Vulnerability
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.
Notes & references
Where this lands in 800-53
Vulnerability data triggers these controls during assessment and continuous monitoring.