CVE-2026-21277: InDesign Desktop | Heap-based Buffer Overflow (CWE-122)
Published Jan 13, 2026
·Updated
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
5 affected components
Adobe InDesign Desktop<21.0
All of the following
Any of the following
Adobe InDesign<20.5.1
Adobe InDesign>=21.0<21.1
Any of the following
Apple macOS
Microsoft Windows
Event History
Jan 13, 2026
CVE Published
via MITRE·06:35 PM
Data Sourced
via MITRE·06:35 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·07:16 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-21277?
CVE-2026-21277 is classified as a critical severity vulnerability due to its potential for arbitrary code execution.
2
How do I fix CVE-2026-21277?
To mitigate CVE-2026-21277, ensure that you update Adobe InDesign Desktop to version 21.1 or later.
3
What versions of Adobe InDesign Desktop are affected by CVE-2026-21277?
Adobe InDesign Desktop versions 21.0, 19.5.5, and earlier are affected by CVE-2026-21277.
4
What type of vulnerability is CVE-2026-21277?
CVE-2026-21277 is a heap-based buffer overflow vulnerability.
5
Does CVE-2026-21277 require user interaction for exploitation?
Yes, exploitation of CVE-2026-21277 requires user interaction.