CVE-2026-21304: InDesign Desktop | Heap-based Buffer Overflow (CWE-122)
InDesign Desktop versions 21.0, 19.5.5 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
Event History
Frequently Asked Questions
What is the severity of CVE-2026-21304?
CVE-2026-21304 is considered a critical vulnerability due to the potential for arbitrary code execution.
How do I fix CVE-2026-21304?
To mitigate CVE-2026-21304, update Adobe InDesign Desktop to version 21.1 or later as soon as possible.
What versions are affected by CVE-2026-21304?
CVE-2026-21304 affects Adobe InDesign Desktop versions 21.0, 19.5.5, and earlier.
What type of vulnerability is CVE-2026-21304?
CVE-2026-21304 is a heap-based buffer overflow vulnerability, classified under CWE-122.
What are the risks of CVE-2026-21304 if exploited?
If exploited, CVE-2026-21304 could allow an attacker to execute arbitrary code in the context of the current user.