Heap-based Buffer Overflow in InDesign Desktop by Adobe
CVE-2026-21277

7.8HIGH

Key Information:

Vendor

Adobe
Status
Indesign Desktop
Vendor
CVE Published:
13 January 2026

What is CVE-2026-21277?

Adobe InDesign Desktop versions 21.0 and 19.5.5, along with earlier versions, are susceptible to a heap-based buffer overflow vulnerability. This flaw could allow an attacker to execute arbitrary code, impacting the current user's context. Successful exploitation requires the victim to open a specially crafted malicious file, which highlights the need for user vigilance and robust security practices.

Affected Version(s)

InDesign Desktop 0 <= 19.5.5

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

.