CVE-2026-21281: Adobe Incopy

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

InCopy versions 21.0, 19.5.5 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Affected products

• Adobe Incopy: before 20.5.1 (fixed in 20.5.1); version 21.0 only

Published 2026-01-13. Last modified 2026-08-28.