ZDI-26-676: Adobe Acrobat Reader DC DigSig Use-After-Free Remote Code Execution Vulnerability
Published Sep 10, 2026
·Updated
This vulnerability allows remote attackers to execute arbitrary code 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 7.8. The following CVEs are assigned: CVE-2026-81973.
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 does an attacker need to do to exploit this vulnerability?
The attacker must persuade the target to visit a malicious page or open a malicious file. Successful exploitation can result in arbitrary code execution on the affected Adobe Acrobat Reader DC installation.
2
How severe is this issue?
ZDI assigned this vulnerability a CVSS score of 7.8, and the listed risk score is 82. Exploitation requires user interaction.