Security readout for executives and security teams
Plain-English summary
Adobe Substance 3D Painter 12.0.2 and earlier can be compromised when a user opens a malicious file. Successful exploitation could let an attacker run code with that user’s permissions, potentially exposing files, altering data, or disrupting the workstation.
Executive priority
Prioritize remediation on creative workstations that exchange files with customers, contractors, or public communities. Treat this as a high-priority endpoint update, while recognizing that exploitation requires a user to open a malicious file and active exploitation is not established by the supplied evidence.
Technical view
CVE-2026-34675 is an out-of-bounds write (CWE-787) with CVSS 3.1 score 7.8. It requires local delivery and user interaction, needs no prior privileges, and can affect confidentiality, integrity, and availability. Code execution occurs in the current user’s context.
Likely exposure
Exposure is concentrated on endpoints running Substance 3D Painter 12.0.2 or earlier, particularly where users receive files from external or untrusted sources. Systems on later versions appear outside the supplied affected range, but Adobe’s advisory should confirm exact status.
Exploitation context
A victim must open a malicious file, so this is not described as remotely exploitable without user interaction. The supplied bundle does not identify the CVE as CISA KEV-listed and provides no evidence of active exploitation or public exploit availability.
Researcher notes
The supplied affected data and description support versions through 12.0.2, with 12.0.3 appearing as the unaffected boundary. Researchers should consult Adobe’s advisory for precise release guidance. No malicious-file format, root cause details, exploit maturity, or observed attack campaign is established in the bundle.
Mitigation direction
- Update Substance 3D Painter according to Adobe’s security advisory and verify the installed version is outside the affected range.
- Restrict opening Painter files from unknown, unsolicited, or untrusted sources until affected installations are remediated.
- Use least-privilege user accounts to limit the impact of code execution in the current user’s context.
- Apply endpoint protections and monitor Painter processes for unusual child processes or file activity.
Validation and detection
- Inventory Substance 3D Painter installations and identify versions 12.0.2 or earlier.
- Confirm updated endpoints report a version outside the supplied affected range.
- Review software deployment records for failed, deferred, or excluded updates.
- Check endpoint telemetry for suspicious activity associated with Painter after externally sourced files were opened.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-34675 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9adobeVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/substance3d_painter/apsb26-55.htmlCVE reference, adobe · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.