CVE-2026-21304

HighCVSS 7.8/10Last modified Aug 28, 2026

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-122CWE-787

Affected software

No affected versions have been published.

Timeline

Published
Jan 13, 2026
Last modified
Aug 28, 2026
NVD status
Analyzed

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CVE-2026-21304: High severity, CVSS 7.8 | Vulnix