Is CVE-2026-34699 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-34699 being exploited in the wild.

How severe is CVE-2026-34699?

High severity, with a CVSS score of 7.8, published 9 June 2026.

Which products and versions are affected?

Adobe InDesign Desktop 21.3, 20.5.3 and earlier versions.

Is there a fix for CVE-2026-34699?

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-2026-34699 attacked?

It is attacked with local access, in a network appliance.

Am I affected by CVE-2026-34699?

Check whether you run Adobe InDesign Desktop 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.

CVE-2026-34699: Adobe InDesign heap overflow in file processing

CVE-2026-34699 · Severity: high · CVSS 7.8 · Published 2026-06-09

Adobe InDesign, a professional desktop publishing software, is affected by a security flaw that could allow an attacker to take control of a user's computer. To exploit this, an attacker would need to trick a user into opening a specially crafted malicious file. If successful, the attacker could run unauthorized commands or software with the same permissions as the logged-in user, potentially leading to data theft or system compromise.

Technologies: Adobe InDesign Desktop. Vendors: Adobe.

Quick answers

Is CVE-2026-34699 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-34699 being exploited in the wild.
How severe is CVE-2026-34699?: High severity, with a CVSS score of 7.8, published 9 June 2026.
Which products and versions are affected?: Adobe InDesign Desktop 21.3, 20.5.3 and earlier versions.
Is there a fix for CVE-2026-34699?: 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-2026-34699 attacked?: It is attacked with local access, in a network appliance.
Am I affected by CVE-2026-34699?: Check whether you run Adobe InDesign Desktop 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 vulnerability (CWE-122) exists in Adobe InDesign Desktop versions 21.3, 20.5.3 and earlier. The flaw is triggered when the application improperly handles memory during the processing of a specially crafted file. An attacker can exploit this by convincing a victim to open a malicious document, leading to arbitrary code execution in the context of the current user. The attack vector is local, requiring user interaction (UI:R) but no prior privileges (PR:N). Adobe has addressed this issue in updated versions of the software.

Affected products

Adobe InDesign Desktop 21.3, 20.5.3 and earlier versions

Timeline

2026-06-09: advisory: Adobe published security bulletin APSB26-58
2026-06-09: disclosed

References

https://helpx.adobe.com/security/products/indesign/apsb26-58.html

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