CVE-2026-81984

Received Received - Intake

Use After Free in Adobe Acrobat Reader Leads to Information Disclosure

Publication date: 2026-09-08

Last updated on: 2026-09-08

Assigner: Adobe Systems Incorporated

Description

Acrobat Reader is affected by a Use After Free vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-08

Generated

2026-09-09

AI Q&A

2026-09-09

EPSS Evaluated

N/A

NVD

CVE-2026-81984

Affected Vendors & Products

Vendor	Product	Version / Range
adobe	acrobat_reader	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This is a Use After Free vulnerability in Acrobat Reader that could allow disclosure of sensitive memory. An attacker would need to trick a user into opening a malicious file to exploit it.

Detection Guidance

Detection of this vulnerability primarily involves monitoring for suspicious files or unusual memory access patterns. Since exploitation requires user interaction with a malicious file, inspecting files opened with Acrobat Reader for signs of tampering or unexpected behavior is recommended. No specific commands are provided in the context.

Impact Analysis

An attacker could exploit this to read sensitive information from your system's memory, potentially accessing data you did not intend to share.

Compliance Impact

This vulnerability could lead to unauthorized disclosure of sensitive data, which may violate GDPR or HIPAA requirements for data protection and confidentiality.

Mitigation Strategies

Update Acrobat Reader to the latest version as soon as patches are available. Avoid opening files from untrusted sources. Disable JavaScript in Acrobat Reader if not required. Monitor Adobe's security advisories for updates.

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