CVE-2026-34621
CRITICAL
NVD
CVSS Score
9.6
Severity
CRITICAL
Published
Apr 11, 2026
Vendor
unknown
Description
Acrobat Reader versions 24.001.30356, 26.001.21367 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.