Adobe Acrobat and Reader Prototype Pollution Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 13/04/2026. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| acrobat | ≥ 24.0.0, < 24.001.30360≥ 24.0.0, < 24.001.30362 | 24.001.3036024.001.30362 |
| acrobat dc | < 26.001.21411 | 26.001.21411 |
| acrobat reader dc | < 26.001.21411 | 26.001.21411 |
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.
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