What’s Vulnerable › Vulnerabilities
CVE-2026-21277: InDesign Desktop | Heap-based Buffer Overflow (CWE-122)
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-01-13 · updated 2026-08-28
- Weakness: CWE-122
Description
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 products
- Adobe InDesign Desktop: before 20.5.1; from 21.0 before 21.1 — fixed in 20.5.1, 21.1
How to fix
Upgrade to a fixed version: Adobe InDesign Desktop 20.5.1, 21.1. Check the vendor advisory for mitigations.
References
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