CVE-2026-34622

Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)

CVE-2026-34622 is fixed in 2 products on 1 platform, first by Adobe Acrobat Reader DC 26.001.21431, released April 13, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
8.6
No vendor severity
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0042
36th percentile

Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 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.

Where it's fixed

ProductFixed inFixReleased
Windows apps
Adobe Acrobat Reader DC 26.001.21431 Adobe Acrobat Reader DC 26.001.21431 Apr 13, 2026
Adobe Acrobat Reader DC (64-bit) 26.001.21431 Adobe Acrobat Reader DC (64-bit) 26.001.21431 Apr 13, 2026

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