Security readout for executives and security teams
Plain-English summary
CVE-2026-1333 affects Dassault Systèmes SOLIDWORKS eDrawings. A malicious EPRT file can trigger code execution when a user opens it. This is mainly a workstation and file-handling risk, not a remote network service issue. Organizations exchanging CAD files with outside parties should treat it as high priority.
Executive priority
High. This can lead to arbitrary code execution on user workstations, but requires a user to open a malicious file. Prioritize teams handling external CAD content and apply vendor guidance as soon as available.
Technical view
The issue is CWE-457, use of an uninitialized variable, in the EPRT file reading procedure. The CVSS 3.1 score is 7.8: local attack vector, low complexity, no privileges required, user interaction required, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely where SOLIDWORKS eDrawings from SOLIDWORKS Desktop 2025 SP0 or 2026 SP0 is installed and users open EPRT files, especially files received from external sources. The source bundle marks other versions as default unaffected but does not list a fixed release.
Exploitation context
The attacker must convince a user to open a specially crafted EPRT file. The provided sources do not indicate active exploitation, and the CVE is not listed as KEV. Risk is higher in engineering, manufacturing, and supplier workflows where CAD files are routinely exchanged.
Researcher notes
Sources provide vulnerability class, affected product/version scope, CVSS vector, and trigger condition. They do not provide exploit details, proof of active exploitation, or a named fixed version in the provided bundle. Avoid assuming broader SOLIDWORKS components are affected.
Mitigation direction
- Check the Dassault Systèmes advisory for vendor-approved updates or workarounds.
- Prioritize remediation on workstations that open externally supplied EPRT files.
- Restrict opening EPRT files from untrusted or unexpected sources.
- Use email and web controls to flag unsolicited CAD file attachments.
- Educate engineering users to verify file provenance before opening EPRT files.
Validation and detection
- Inventory endpoints with SOLIDWORKS eDrawings installed.
- Confirm whether installed releases match SOLIDWORKS Desktop 2025 SP0 or 2026 SP0.
- Review file association and business workflows involving EPRT files.
- Check vendor advisory for fixed versions before closing remediation tickets.
- Monitor security tools for suspicious activity after CAD file opening events.
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-457: 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-2026-1333 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.
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:H1.85.9Primary CVE scoreVulnerability 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
Source materials
- CVE List V5 sourceCVE List V5
- https://www.3ds.com/trust-center/security/security-advisories/cve-2026-1333CVE reference
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 of Uninitialized Variable
Use of Uninitialized Variable represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.