# CVE-2026-34629: Adobe InDesign heap overflow in file processing

Source: https://junglewise.ai/threats/cve-2026-34629-adobe-indesign-heap-overflow-in-file-processing  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-14. Updated: 2026-07-25  
License: CC BY 4.0 with a link back

CVE-2026-34629 · Severity: high · CVSS 7.8 · Published 2026-04-14

Adobe InDesign, a professional desktop publishing software, is vulnerable to a security flaw that could allow an attacker to take control of a user's computer. To exploit this, an attacker must trick a user into opening a specially crafted malicious file. If successful, the attacker could execute commands or access data with the same permissions as the logged-in user.

Technologies: [Adobe InDesign](https://junglewise.ai/threats/technologies/indesign). Vendors: [Adobe](https://junglewise.ai/threats/vendors/adobe).

## Quick answers

**Is CVE-2026-34629 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34629 being exploited in the wild.

**How severe is CVE-2026-34629?** High severity, with a CVSS score of 7.8, published 14 April 2026.

**Which products and versions are affected?** Adobe InDesign <= 20.5.2, <= 21.2.

**Is there a fix for CVE-2026-34629?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-34629 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-34629?** Check whether you run Adobe InDesign at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A heap-based buffer overflow (CWE-122) exists in Adobe InDesign Desktop versions 20.5.2, 21.2, and earlier. The vulnerability is triggered when the application improperly handles memory allocation while processing a specially crafted file. An attacker can exploit this by convincing a user to open a malicious document, leading to arbitrary code execution in the context of the current user. The attack vector is local with required user interaction (UI:R). Adobe has addressed this in newer versions (20.5.3 and 21.3).

## Affected products

- Adobe InDesign Desktop <= 20.5.2, <= 21.2

## Timeline

- 2026-04-14: disclosed
- 2026-04-14: advisory: Adobe released security bulletin APSB26-32

## References

- [https://helpx.adobe.com/security/products/indesign/apsb26-32.html](https://helpx.adobe.com/security/products/indesign/apsb26-32.html)

## Related threats

- [Adobe InDesign out-of-bounds write in Desktop application](https://junglewise.ai/threats/cve-2026-48293-adobe-indesign-out-of-bounds-write-in-desktop-application)
- [Adobe InDesign out-of-bounds read in Desktop application](https://junglewise.ai/threats/cve-2026-34705-adobe-indesign-out-of-bounds-read-in-desktop-application)
- [Adobe InDesign NULL Pointer Dereference denial-of-service](https://junglewise.ai/threats/cve-2026-34704-adobe-indesign-null-pointer-dereference-denial-of-service)
- [Adobe InDesign NULL Pointer Dereference vulnerability](https://junglewise.ai/threats/cve-2026-34703-adobe-indesign-null-pointer-dereference-vulnerability)
- [Adobe InDesign stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-34702-adobe-indesign-stack-based-buffer-overflow)