PT-2026-7393 · Adobe · Indesign Desktop

Jann Horn · Published 2026-02-10 · Updated 2026-02-17 · CVE-2026-21357

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions InDesign Desktop versions 21.1 and 20.5.1 and earlier

Description A Heap-based Buffer Overflow vulnerability exists that may allow arbitrary code execution with the privileges of the current user. Successful exploitation requires a user to open a specially crafted malicious file. Approximately 7.8 million devices may be affected.

Recommendations Update InDesign Desktop to a version later than 21.1. Update InDesign Desktop to a version later than 20.5.1.

Fix

Heap Based Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-122

CWE-787

Related Identifiers

BDU:2026-01927

CVE-2026-21357

Affected Products

Indesign Desktop

References · 5

• https://osv.dev/vulnerability/CVE-2026-21357 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21357 · Security Note
• https://helpx.adobe.com/security/products/indesign/apsb26-17.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01927 · Security Note
• https://twitter.com/CCBalert/status/2023773316293574740 · Twitter Post