CVE-2026-34698: InDesign Desktop | Heap-based Buffer Overflow (CWE-122)
InDesign Desktop versions 21.3, 20.5.3 and earlier are affected by a Heap-based Buffer Overflow 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.
- Compensating control
Block or filter untrusted InDesign files and prevent users from opening unknown attachments. Implement email/web gateway filters or quarantines for incoming InDesign files and train users not to open files from untrusted sources, because exploitation requires a victim to open a malicious file.
- Operational
Ensure InDesign Desktop is run with least privilege (do not run as an administrator). Because exploitation yields arbitrary code execution in the context of the current user, limiting user privileges reduces potential impact.
- Operational
If suspicious activity or potential compromise is detected after opening an InDesign file, isolate the affected system(s), perform incident response, and rotate any credentials or secrets that may have been exposed.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-34698?
CVE-2026-34698 has a high severity rating of 7.8.
How do I fix CVE-2026-34698?
To fix CVE-2026-34698, users should update to the latest version of Adobe InDesign.
What type of vulnerability is CVE-2026-34698?
CVE-2026-34698 is a heap-based buffer overflow vulnerability.
What are the affected versions for CVE-2026-34698?
CVE-2026-34698 affects Adobe InDesign Desktop versions 21.3, 20.5.3, and earlier.
What could be the consequence of exploiting CVE-2026-34698?
Exploitation of CVE-2026-34698 could lead to arbitrary code execution in the context of the current user.