Heap-based Buffer Overflow in Adobe InDesign Desktop
CVE-2026-21357

7.8HIGH

Key Information:

Vendor

Adobe
Status
Indesign Desktop
Vendor
CVE Published:
10 February 2026

What is CVE-2026-21357?

A vulnerability exists in Adobe InDesign Desktop versions 21.1, 20.5.1, and earlier, characterized by a heap-based buffer overflow. This flaw could allow an attacker to execute arbitrary code within the context of the current user when a malicious file is opened. The successful exploitation of this vulnerability necessitates user interaction, placing the responsibility on the user to avoid risky files.

Affected Version(s)

InDesign Desktop 0 <= 20.5.1

References

https://helpx.adobe.com/security/products/indesign/apsb26...
vendor-advisory

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.