# CVE-2026-34687: Adobe Illustrator heap buffer overflow

Source: https://junglewise.ai/threats/cve-2026-34687-adobe-illustrator-heap-buffer-overflow  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-12. Updated: 2026-05-14  
License: CC BY 4.0 with a link back

CVE-2026-34687 · Severity: high · CVSS 7.8 · Published 2026-05-12

Adobe Illustrator, a professional graphic design application, 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. Successful exploitation could lead to unauthorized software installation, data theft, or complete system compromise in the context of the logged-in user.

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

## Quick answers

**Is CVE-2026-34687 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34687 being exploited in the wild.

**How severe is CVE-2026-34687?** High severity, with a CVSS score of 7.8, published 12 May 2026.

**Which products and versions are affected?** Adobe Illustrator 29.8.6 and earlier, 30.3 and earlier.

**Is there a fix for CVE-2026-34687?** 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-2026-34687 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-34687?** Check whether you run Adobe Illustrator 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 Illustrator versions 29.8.6, 30.3 and earlier. The vulnerability is triggered when the application improperly handles memory during the parsing of a specially crafted file. An attacker can achieve arbitrary code execution in the context of the current user by convincing a victim to open a malicious document. The attack vector is local (file-based) and requires user interaction. Adobe has addressed this in updated versions of the software.

## Affected products

- Adobe Illustrator 29.8.6 and earlier, 30.3 and earlier

## Timeline

- 2026-05-12: disclosed
- 2026-05-12: advisory

## References

- [https://helpx.adobe.com/security/products/illustrator/apsb26-51.html](https://helpx.adobe.com/security/products/illustrator/apsb26-51.html)

## Related threats

- [Adobe Illustrator out-of-bounds write vulnerability](https://junglewise.ai/threats/cve-2026-75992-adobe-illustrator-out-of-bounds-write-vulnerability)
- [Adobe Illustrator improper input validation in file parsing](https://junglewise.ai/threats/cve-2026-75991-adobe-illustrator-improper-input-validation-in-file-parsing)
- [Adobe Illustrator incorrect authorization arbitrary code execution](https://junglewise.ai/threats/cve-2026-75990-adobe-illustrator-incorrect-authorization-arbitrary-code)
- [Adobe Illustrator out-of-bounds read in file parsing](https://junglewise.ai/threats/cve-2026-71441-adobe-illustrator-out-of-bounds-read-in-file-parsing)
- [Adobe Illustrator out-of-bounds write in file processing](https://junglewise.ai/threats/cve-2026-48337-adobe-illustrator-out-of-bounds-write-in-file-processing)