ZDI-26-661: Adobe Acrobat Reader DC Annotation Use-After-Free Remote Code Execution Vulnerability
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-2026-81985.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Since Adobe Acrobat Reader DC requires user interaction (visiting a malicious page or opening a malicious file), reduce exposure by warning users not to open untrusted files or visit untrusted pages.
- Compensating control
Apply mitigations associated with ZDI-26-661 for Adobe Acrobat Reader DC Annotation Use-After-Free Remote Code Execution (CVE-2026-81985).
Event History
Frequently Asked Questions
What must an attacker do to exploit this issue?
The attacker must induce 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.
Is this exploitable without user interaction?
No. The available information states that user interaction is required, specifically visiting a malicious page or opening a malicious file.
How severe is the issue?
ZDI assigned this vulnerability a CVSS rating of 7.8. The issue is tracked as CVE-2026-81985.