Security readout for executives and security teams
Plain-English summary
A remote attacker may be able to take control of vulnerable 3DEXPERIENCE Station Launcher installations without credentials or user interaction. Successful exploitation could expose sensitive data, alter systems, and interrupt operations. The supplied record rates the issue 10.0, the maximum CVSS score.
Executive priority
Treat this as an immediate investigation and remediation priority. Assign ownership now, establish affected asset count and reachability, and seek Dassault Systèmes remediation guidance. Internet-accessible or otherwise untrusted-network-reachable deployments should receive the fastest attention because the stated attack requires neither authentication nor user action.
Technical view
CVE-2026-11756 is a CWE-502 deserialization-of-untrusted-data flaw in the Station Launcher App. The stated conditions are network access, low complexity, no privileges, and no user interaction. The record says exploitation could produce unauthenticated remote code execution with high confidentiality, integrity, and availability impact across a changed security scope.
Likely exposure
Exposure is limited to organizations operating the Station Launcher App on listed 3DEXPERIENCE R2023x, R2024x, R2025x, or R2026x Golden releases. Risk is greatest where the affected component is network-reachable. The supplied evidence does not identify exposed ports, configurations, hosting models, or other prerequisites.
Exploitation context
The supplied bundle does not establish active exploitation, and the CVE is not marked as CISA KEV. It also provides no public exploit, indicators of compromise, or attack-path details. Absence from KEV does not prove the vulnerability is not being exploited.
Researcher notes
The public bundle establishes CWE-502, affected Golden releases, possible unauthenticated remote code execution, and CVSS 3.1 score 10.0. It does not disclose the vulnerable serialization format, endpoint, attack prerequisites beyond the vector, patched versions, workarounds, detection artifacts, or exploitation observations. Those gaps prevent more precise exposure testing guidance.
Mitigation direction
- Inventory Station Launcher App deployments and identify their exact 3DEXPERIENCE release.
- Consult the Dassault Systèmes advisory for release-specific remediation or supported updates.
- Apply vendor-supported remediation as soon as operational testing permits.
- Until remediated, reduce network reachability to trusted systems where operationally feasible.
- Increase monitoring around affected hosts for unexpected application or process activity.
Validation and detection
- Confirm whether Station Launcher App is installed on each 3DEXPERIENCE environment.
- Compare installed releases against the four affected Golden releases.
- Determine whether untrusted networks can reach the affected component.
- Verify vendor-recommended remediation is applied using approved inventory evidence.
- Review relevant host and application telemetry for unexplained execution or configuration changes.
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-502: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. 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-2026-11756 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
- Critical
- CVSS
- 10 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H3.963DSVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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://www.3ds.com/trust-center/security/security-advisories/cve-2026-11756CVE reference, 3DS
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.
Deserialization of Untrusted Data
Deserialization of Untrusted Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.