Security readout for executives and security teams
Plain-English summary
Adobe Substance 3D Modeler can expose sensitive information from memory when a user opens a malicious file. The issue affects version 1.22.5 and earlier. It does not directly alter data or disrupt service, but exposed memory could contain confidential information.
Executive priority
Schedule prompt workstation remediation, prioritizing teams that exchange external 3D assets. This is not presented as an emergency internet-wide threat, but memory disclosure can expose confidential project data or credentials present in application memory.
Technical view
CVE-2026-21348 is an out-of-bounds read (CWE-125) with CVSS 3.1 score 5.5. Exploitation is local, requires no privileges, and depends on user interaction. Successful exploitation may disclose memory contents; the supplied record identifies no integrity or availability impact.
Likely exposure
Exposure is concentrated on workstations running Substance 3D Modeler 1.22.5 or earlier, particularly where users open externally supplied or untrusted files. Network-only systems and installations outside the affected version range are not identified as affected.
Exploitation context
A victim must open a malicious file in the affected application. The source bundle does not establish active exploitation, public exploit availability, or inclusion in the known-exploited catalogue. Treat unsolicited Modeler-compatible files as the primary risk pathway.
Researcher notes
The affected boundary is stated as version 1.22.5 and earlier. The structured version data appears to place 1.22.6 outside that range, but the bundle does not explicitly name it as the fixed release. Confirm remediation details directly with Adobe. No technical root-cause detail beyond CWE-125 is supplied.
Mitigation direction
- Check Adobe's advisory for the vendor-designated fixed release and deployment guidance.
- Update every installation running version 1.22.5 or earlier.
- Restrict opening Modeler files from unknown or untrusted sources until remediation.
- Use existing email and content controls to quarantine suspicious attachments.
Validation and detection
- Inventory installed Substance 3D Modeler versions across managed endpoints.
- Confirm no installation remains on version 1.22.5 or earlier.
- Verify deployed versions against Adobe's advisory and supported release information.
- Review endpoint and email telemetry for suspicious files opened with Modeler.
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-125: 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 lookupCVE-2026-21348 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
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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:N/A:N1.83.6adobeVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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-modeler/apsb26-22.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 Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.