Adobe InDesign Desktop up to 20.5.3/21.3 File stack-based overflow

Summaryinfo

A vulnerability labeled as critical has been found in Adobe InDesign Desktop up to 20.5.3/21.3. This affects an unknown function of the component File Handler. Such manipulation leads to stack-based overflow. This vulnerability is documented as CVE-2026-34697. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Adobe InDesign Desktop up to 20.5.3/21.3 and classified as critical. Affected by this issue is an unknown part of the component File Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. CVE summarizes:

InDesign Desktop versions 21.3, 20.5.3 and earlier are affected by a Stack-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.

The advisory is available at helpx.adobe.com. This vulnerability is handled as CVE-2026-34697 since 03/30/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 06/09/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Image Processing Software

Vendor

• Adobe

Name

• InDesign Desktop

Version

• 20.5.0
• 20.5.1
• 20.5.2
• 20.5.3
• 21.0
• 21.1
• 21.2
• 21.3

License

• commercial

Website

• Vendor: https://www.adobe.com/

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