# CVE-2026-34618: Adobe Illustrator out-of-bounds write in file processing

Source: https://junglewise.ai/threats/cve-2026-34618-adobe-illustrator-out-of-bounds-write-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-2026-34618 · Severity: high · CVSS 7.8 · Published 2026-04-14

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 under the permissions 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-2026-34618 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34618 being exploited in the wild.

**How severe is CVE-2026-34618?** High severity, with a CVSS score of 7.8, published 14 April 2026.

**Which products and versions are affected?** Adobe Illustrator 30.2, 29.8.5 and earlier.

**Is there a fix for CVE-2026-34618?** 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-2026-34618 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-34618?** 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

An out-of-bounds write vulnerability (CWE-787) exists in Adobe Illustrator versions 30.2, 29.8.5 and earlier. The flaw is triggered when the application processes a specially crafted file, leading to memory corruption. An attacker can leverage this to execute arbitrary code in the context of the current user. The attack vector is local, requiring the victim to manually open a malicious file (User Interaction: Required). Adobe has addressed this in newer versions, and users are advised to update to Illustrator 30.3 or 29.8.6 and later.

## Affected products

- Adobe Illustrator 30.2, 29.8.5 and earlier

## Timeline

- 2026-04-14: disclosed
- 2026-04-14: advisory: Adobe security bulletin APSB26-42 published

## References

- [https://helpx.adobe.com/security/products/illustrator/apsb26-42.html](https://helpx.adobe.com/security/products/illustrator/apsb26-42.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)