CVE-2026-34622: Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-34622?
CVE-2026-34622 is considered a critical vulnerability due to its potential for prototype pollution in affected versions of Adobe Acrobat Reader.
How do I fix CVE-2026-34622?
To fix CVE-2026-34622, you should update Adobe Acrobat Reader to the latest version that addresses this vulnerability.
Which versions of Adobe Acrobat Reader are affected by CVE-2026-34622?
CVE-2026-34622 affects Adobe Acrobat Reader versions 26.001.21411, 24.001.30360, and 24.001.30362 and earlier.
What is prototype pollution in the context of CVE-2026-34622?
Prototype pollution refers to the manipulation of an object's prototype in a way that can lead to unwanted behavior in applications, which is the issue posed by CVE-2026-34622.
What should I do if I cannot update my Adobe Acrobat Reader due to compatibility issues?
If updating is not possible, consider implementing additional security measures to mitigate the risks associated with CVE-2026-34622.