CVE-2026-21275: InDesign Desktop | Access of Uninitialized Pointer (CWE-824)

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-824

Description

InDesign Desktop versions 21.0, 19.5.5 and earlier are affected by an Access of Uninitialized Pointer 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

https://helpx.adobe.com/security/products/indesign/apsb26-02.html

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