Product:
InDesign Desktop
Summary
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.
Details
| Severity | Base Score | CVE |
|---|---|---|
| HIGH | 7.8 | CVE-2026-21277 |
Exploitation
To exploit this vulnerability, an attacker must craft a malicious file that, when opened by the victim using an affected version of InDesign Desktop, triggers the buffer overflow. This requires the victim to be tricked into opening the file, which can be delivered through various means such as email attachments or downloads from untrusted sources.
Affected Products
- InDesign Desktop 21.0: Affected by a buffer overflow vulnerability.
- InDesign Desktop 19.5.5: Also vulnerable to the same issue.
Mitigation
Users are advised to avoid opening files from untrusted sources and to update to the latest version of InDesign Desktop as soon as it becomes available. Regularly checking for updates can help mitigate the risk of exploitation.