ZDI-26-669: Adobe Acrobat Reader DC JBIG2 File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability
Published Sep 10, 2026
·Updated
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Adobe Acrobat Reader DC. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 3.3. The following CVEs are assigned: CVE-2026-81978.
Affected Software
1 affected component
Adobe Acrobat Reader DC
Event History
Sep 10, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
What must an attacker do to exploit this issue?
An attacker must induce the target to visit a malicious page or open a malicious file. Exploitation is remote but requires user interaction.
2
What is the likely impact if exploitation succeeds?
The vulnerability allows disclosure of sensitive information from an affected Adobe Acrobat Reader DC installation. It is rated CVSS 3.3 by ZDI.