Adobe Substance 3D Painter: Stack-based buffer overflow allows code execution
Summary
Adobe Substance 3D Painter up to and including version 12.1.5 contains a stack-based buffer overflow (CWE-121) tracked as CVE-2026-48379. An attacker who gets a user to open a malicious file can execute arbitrary code with the privileges of the current user. Exploitation requires user interaction, and the flaw is local rather than network-exposed.
Affected
- Adobe Substance 3D Painter 12.1.5 and earlier versions (all platforms)
Fixed in
- Adobe Substance 3D Painter 12.2 (all platforms), per Adobe bulletin APSB26-178
- Exact fixed build to be confirmed in the advisory table before rollout
Workaround
- Unknown. No vendor-documented workaround.
- Interim measure (not from vendor): only open project or texture files from trusted sources until patched.
Exploitation
- Adobe is not aware of any exploits in the wild.
- No public proof of concept found; SecurityFocus lists no public exploit and no CISA KEV entry.
- CISA SSVC: exploitation none, automatable no.
Our recommendation
- Update Substance 3D Painter to 12.2 or later via the Creative Cloud desktop app or the Admin Console.
- Prioritise workstations used for 3D, texturing or design work.
- Update together with CVE-2026-48380 (same bulletin).
- Until patched, only open files from trusted sources.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Adobe Security Bulletin APSB26-178 www.adobe.com
- VulDB CVE-2026-48379 vuldb.com
- OffSeq threat advisory radar.offseq.com
- SecurityFocus CVE-2026-48379 www.securityfocus.com
- Strix CVE-2026-48379 www.strix.ai
- Threatint mirror CVE-2026-48379 cve.threatint.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 22:10.
Original description (NVD)
Substance3D - Painter is affected by a Stack-based Buffer Overflow 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.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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