CVE-2026-21358

Medium

Description

InDesign Desktop versions 21.1, 20.5.1 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in application denial-of-service. An attacker could exploit this vulnerability to crash the application, causing disruption to services. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

SeverityMedium

CVSS5.5

Exploit probability—

Product

Adobe Indesign

PublishedFeb 10, 2026

First seenFeb 10, 2026

Weakness typeCWE-122CWE-122

How to fix

Update

adobe indesign20.5.2, 21.2 or later

Vendor advisories

helpx.adobe.com/security/products/indesign/apsb26-17.html

Affected products

Product	Affected versions	Fixed in
adobe indesign	v < 20.5.2, 21.0 ≤ v < 21.2	20.5.2, 21.2

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