ZDI-26-663: Adobe Acrobat Pro DC Annotation Use-After-Free Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Adobe Acrobat Pro 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-2026-81989.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Because ZDI-26-663 (Adobe Acrobat Pro DC annotation use-after-free RCE) requires user interaction, reduce exposure by preventing users from opening malicious files or visiting untrusted websites (e.g., via user education and web/file access controls).
Event History
Frequently Asked Questions
What must an attacker do to exploit this issue?
The attacker must persuade the target to visit a malicious page or open a malicious file. Exploitation can then result in arbitrary code execution on the affected Adobe Acrobat Pro DC installation.
Is user interaction required?
Yes. The target must visit an attacker-controlled page or open a malicious file for exploitation to occur.
What is the assigned CVE and severity rating?
The issue is tracked as CVE-2026-81989 and has a CVSS rating of 7.8.