CVE-2021-42731: Adobe Indesign Buffer Overflow Could Lead to Remote Code Execution

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-11-16 · updated 2026-06-17
Weakness: CWE-120

Description

Adobe InDesign versions 16.4 (and earlier) are affected by a Buffer Overflow vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to achieve 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 InDesign Desktop: through 16.4

References

https://helpx.adobe.com/security/products/indesign/apsb21-107.html
https://helpx.adobe.com/security/products/indesign/apsb21-107.html

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