PT-2026-2773 · Adobe · Indesign Desktop

Jann Horn · CVE-2026-21276 · Published 2026-01-13 · Updated 2026-01-13

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 an Access of Uninitialized Pointer issue. Successful exploitation of this issue could lead to arbitrary code execution with the privileges of the current user. User interaction is required, specifically, a user must open a malicious file for exploitation to occur.

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

Fix

Access of Uninitialized Pointer

Weakness Enumeration

CWE-824

Related Identifiers

BDU:2026-00519

CVE-2026-21276

Affected Products

Indesign Desktop

References · 5

• https://helpx.adobe.com/security/products/indesign/apsb26-02.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00519 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-21276 · Security Note
• https://osv.dev/vulnerability/CVE-2026-21276 · Vendor Advisory
• https://twitter.com/CVEnew/status/2011181498645504022 · Twitter Post