Adobe Security Bulletin
Last updated on Jan 13, 2026
Security Update Available for Adobe InCopy | APSB26-04
Summary
Adobe has released a security update for Adobe InCopy. This update addresses a critical vulnerability that could lead to arbitrary code execution.
Adobe is not aware of any exploits in the wild for any of the issues addressed in these updates.
Affected versions
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 InCopy Help menu and clicking "Updates." For more information, please reference this help page.
Note
For managed environments, IT administrators can use the Creative Cloud Packager to create deployment packages. Refer to this help page for more information.
Vulnerability Details
Acknowledgments
Adobe would like to thank the following researchers for reporting this issue and for working with Adobe to help protect our customers.
- yjdfy -- CVE-2026-21281
NOTE: Adobe has a public bug bounty program with Intigriti. 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.
