PT-2026-2774 · Adobe · Indesign Desktop

Jann Horn · Published 2026-01-13 · Updated 2026-01-13 · CVE-2026-21277

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 19.5.5 and earlier InDesign Desktop version 21.0

Description InDesign Desktop versions 19.5.5 and 21.0 are susceptible to a Heap-based Buffer Overflow condition. Successful exploitation of this issue could lead to arbitrary code execution with the privileges of the current user. User interaction is required for exploitation, specifically, a user must open a malicious file.

Recommendations Update InDesign Desktop to a version later than 21.0. Update InDesign Desktop to a version later than 19.5.5.

Fix

Memory Corruption

Heap Based Buffer Overflow

Weakness Enumeration

CWE-787

CWE-122

Related Identifiers

BDU:2026-00518

CVE-2026-21277

Affected Products

Indesign Desktop

References · 5

• https://helpx.adobe.com/security/products/indesign/apsb26-02.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21277 · Security Note
• https://osv.dev/vulnerability/CVE-2026-21277 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00518 · Security Note
• https://twitter.com/CVEnew/status/2011181494778413125 · Twitter Post