Security readout for executives and security teams
Plain-English summary
A malicious Substance 3D Stager file could take control of the application when an employee opens it. Successful exploitation could expose, alter, or destroy data available to that user. The issue is serious but requires user interaction and local file access.
Executive priority
Prioritize remediation for creative teams and systems exchanging files with external parties. Treat this as a high-priority workstation update, not an emergency internet-facing incident. Accelerate action where Stager runs under privileged accounts or handles files from untrusted sources.
Technical view
CVE-2026-27277 is a use-after-free vulnerability in Adobe Substance 3D Stager 3.1.7 and earlier. Opening a crafted file may trigger arbitrary code execution with the current user’s privileges. CVSS 3.1 rates it 7.8: local attack vector, low complexity, no privileges required, and user interaction required.
Likely exposure
Exposure is concentrated on workstations running Substance 3D Stager 3.1.7 or earlier, especially where users receive project files through email, collaboration platforms, downloads, or external parties. Systems without the product, or outside the stated affected range, are not supported as affected by this source bundle.
Exploitation context
The victim must open a malicious file. The bundle does not identify public exploitation, and the CVE is not listed as CISA KEV in the supplied data. Therefore, active exploitation cannot be claimed. Successful execution occurs in the current user’s context, so privileged user accounts increase potential impact.
Researcher notes
The stated weakness is CWE-416, indicating access to memory after it has been freed. The supplied vector is CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. The bundle provides no technical root-cause detail, indicators, public proof of concept, or confirmed exploitation evidence.
Mitigation direction
- Identify and prioritize installations of Substance 3D Stager 3.1.7 or earlier.
- Apply the corrected release specified in Adobe advisory APSB26-29.
- Until updated, prevent users from opening untrusted or unsolicited Stager files.
- Use least-privilege accounts to limit consequences of successful code execution.
Validation and detection
- Inventory installed Substance 3D Stager versions across managed endpoints.
- Confirm no installations remain at version 3.1.7 or earlier.
- Verify deployment records against Adobe advisory APSB26-29.
- Review endpoint telemetry for unexpected child processes or crashes associated with Stager file handling.
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-416: 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-2026-27277 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_stager/apsb26-29.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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.