7.8High
Adobe Substance 3d Painter
CVE-2026-21305
Substance3D - Painter versions 11.0.3 and earlier are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
What this means for your business
- It affects Adobe Substance 3d Painter. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it only with access to the machine itself, without a login, but only after tricking someone into an action such as opening a file or a link.
- FIRST's prediction model gives it a 0.2% chance of attack attempts being seen in the next 30 days, ranking above 12% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Adobe Substance 3d Painter, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 7.8 (v3.1)
- Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Weakness
- CWE-787
- Assigned by
- psirt@adobe.com
Dates
- Published
- 2026-01-13
- Last modified
- 2026-08-28
- Sources
- NVD
Affected products
- Adobe Substance 3d Painter- 11.1.2
As listed in the NVD configuration data. Not a statement about your estate.