Acrobat Reader Prototype Pollution Allows Arbitrary FS Read
CVE-2026-81994 Published on September 8, 2026
Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)
Acrobat Reader is affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could lead to arbitrary file system read. An attacker could exploit this vulnerability to access sensitive files and directories outside the intended access scope. Exploitation of this issue requires user interaction in that a victim must open a malicious file. Scope is changed.
Vulnerability Analysis
CVE-2026-81994 is exploitable with local system access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is a Prototype Pollution Vulnerability?
The software receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.
CVE-2026-81994 has been classified to as a Prototype Pollution vulnerability or weakness.
Products Associated with CVE-2026-81994
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Affected Versions
Adobe Acrobat:- Before and including 26.002.21900 is affected.
- Version 26.002.21901 is unaffected.
- Before and including 26.002.21900 is affected.
- Version 26.002.21901 is unaffected.
- Before and including 24.001.30383 is affected.
- Version 24.001.30429 is unaffected.