# CVE-2026-75991: Adobe Illustrator improper input validation in file parsing

Source: https://junglewise.ai/threats/cve-2026-75991-adobe-illustrator-improper-input-validation-in-file-parsing  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-08. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-75991 · Severity: high · CVSS 8.6 · Published 2026-09-08

Adobe Illustrator, a widely used vector graphics design application, contains an improper input validation vulnerability in file parsing logic. An attacker can exploit this flaw by crafting a malicious Illustrator file that, when opened by a user, executes arbitrary code with the privileges of the current user—potentially compromising the user's system and sensitive design data.

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

## Quick answers

**Is CVE-2026-75991 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-75991 being exploited in the wild.

**How severe is CVE-2026-75991?** High severity, with a CVSS score of 8.6, published 8 September 2026.

**Which products and versions are affected?** Adobe Illustrator.

**Is there a fix for CVE-2026-75991?** 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-2026-75991 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-75991?** Check whether you run Adobe Illustrator. 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

The vulnerability is an improper input validation flaw in Adobe Illustrator's file parsing mechanism. An attacker can craft a malicious file that bypasses input validation checks, leading to arbitrary code execution in the context of the current user. The attack requires user interaction—the victim must open the malicious file intentionally or be socially engineered to do so. The scope is changed, indicating the vulnerability can impact resources beyond the vulnerable component itself. A patch is expected to be available from Adobe via security bulletin APSB26-131.

## Affected products

- Adobe Illustrator

## Timeline

- 2026-09-08: disclosed

## References

- [https://helpx.adobe.com/security/products/illustrator/apsb26-131.html](https://helpx.adobe.com/security/products/illustrator/apsb26-131.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 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)
- [Adobe Illustrator out-of-bounds write in file processing](https://junglewise.ai/threats/cve-2026-48336-adobe-illustrator-out-of-bounds-write-in-file-processing)