.

Adobe Security Bulletin

Last updated on Jan 13, 2026

Security Update Available for Adobe InDesign | APSB26-02

Bulletin ID
Date published
Priority
APSB26-02
January 13, 2026
3
style
grid width 12

Summary

Adobe has released a security update for Adobe InDesign. This update addresses critical and important vulnerabilities that could lead to arbitrary code execution and memory exposure.

Adobe is not aware of any exploits in the wild for any of the issues addressed in these updates.

Affected versions

Product
Affected version
Platform
Adobe InDesign
ID21.0 and earlier versions
Windows and macOS
Adobe InDesign
ID19.5.5 and earlier versions
Windows and macOS
style
grid width 12

Solution

Adobe categorizes these updates with the following priority rating and recommends users update their software installations via the Creative Cloud desktop app updater, or by navigating to the InDesign Help menu and clicking "Updates." For more information, please reference this help page.

Product
Updated version
Platform
Priority rating
Adobe InDesign
ID21.1
Windows and macOS
3
Adobe InDesign
ID20.5.1
Windows and macOS
3
style
grid width 12

Note

For managed environments, IT administrators can use the Creative Cloud Packager to create deployment packages. Refer to this help page for more information.

style
xl spacing, one up, grid width 8, static-links, xxl-spacing-top

Vulnerability Details

Vulnerability category
Vulnerability impact
Severity
CVSS base score
CVSS vector
CVE number
Access of Uninitialized Pointer (CWE-824)
Arbitrary code execution
Critical
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-21275
Access of Uninitialized Pointer (CWE-824)
Arbitrary code execution
Critical
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-21276
Heap-based Buffer Overflow (CWE-122)
Arbitrary code execution
Critical
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-21277
Heap-based Buffer Overflow (CWE-122)
Arbitrary code execution
Critical
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-21304
Out-of-bounds Read (CWE-125)
Memory exposure
Important
5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVE-2026-21278

Acknowledgments

Adobe would like to thank the following researchers for reporting these issues and for working with Adobe to help protect our customers:

  • Francis Provencher (prl) -- CVE-2026-21275, CVE-2026-21276, CVE-2026-21277, CVE-2026-21278
  • yjdfy -- CVE-2026-21304

NOTE: Adobe has a public bug bounty program. If you are interested in working with Adobe as an external security researcher, please check out https://app.intigriti.com/programs/adobe/adobepublic/detail

For more information, visit https://www.adobe.com/trust/security/bug-bounty.html, or email PSIRT@adobe.com

CardTitle
APSB26-02
CardDescription
Priority 3 Security update
CardImage
Adobe
Created
2026-01-13
Tags
caas:content-type/documentation,caas:trust-center/security-bulletin,caas:products/indesign
PrimaryTag
caas:content-type/article
Details
caas:mnemonics/indesign
Arbitrary
search: CVE-2026-21275 CVE-2026-21276 CVE-2026-21277 CVE-2026-21304 CVE-2026-21278