CVE-2026-34696: InDesign Desktop | Use After Free (CWE-416)
InDesign Desktop versions 21.3, 20.5.3 and earlier are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Configuration
Ensure users run InDesign under non-administrative accounts (least privilege) so that any code execution resulting from a malicious file is limited to the current, non-elevated user context.
Operating system / user accounts user_privileges = non-administrative / least-privilege - Compensating control
Block, quarantine, or scan InDesign files (.indd and related) from untrusted sources at email gateways and content filters. Require that suspicious or unknown files be opened only in an isolated sandbox, virtual machine, or dedicated non-production machine.
- Compensating control
Educate users to not open InDesign files from unknown or untrusted senders and to verify file origins before opening; treat unexpected InDesign attachments as high risk.
- Operational
Monitor the vendor (Adobe) for security advisories and apply any InDesign updates or patches provided by the vendor as soon as they are available.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-34696?
CVE-2026-34696 has a high severity rating of 7.8.
How do I fix CVE-2026-34696?
To fix CVE-2026-34696, update Adobe InDesign Desktop to version 21.4 or later.
What kind of vulnerability is CVE-2026-34696?
CVE-2026-34696 is categorized as a Use After Free vulnerability (CWE-416).
What could happen if CVE-2026-34696 is exploited?
Exploitation of CVE-2026-34696 could lead to arbitrary code execution in the context of the current user.
What is required for the exploitation of CVE-2026-34696?
Exploitation of CVE-2026-34696 requires user interaction, specifically opening a malicious file.