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

Summaryinfo

A vulnerability classified as critical was found in Adobe InDesign Desktop up to 20.5.3/21.3. Affected by this issue is some unknown functionality of the component File Handler. The manipulation results in heap-based overflow. This vulnerability is known as CVE-2026-34701. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Adobe InDesign Desktop up to 20.5.3/21.3. Affected is an unknown function of the component File Handler. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

InDesign Desktop versions 21.3, 20.5.3 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.

The advisory is available at helpx.adobe.com. This vulnerability is traded as CVE-2026-34701 since 03/30/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. 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 $0-$5k at the moment (estimation calculated on 06/09/2026).

Upgrading eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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/

CPE 2.3info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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