Security readout for executives and security teams
Plain-English summary
Siemens NX and NX Managed Mode versions before V2512 have a PDF export-related validation flaw. A local attacker could manipulate internal data during export and potentially run code. Business urgency is highest for engineering workstations handling untrusted project files or shared local environments.
Executive priority
Prioritize remediation in engineering groups using NX for sensitive design work. The vulnerability is not described as remotely exploitable, but successful exploitation could compromise valuable intellectual property and workstation integrity.
Technical view
CVE-2026-22923 affects Siemens NX and NX Managed Mode before V2512. The issue is described as a data validation vulnerability mapped to CWE-121, with potential arbitrary code execution during PDF export. CVSS 3.1 is 7.8: local attack vector, low complexity, no privileges, user interaction required, and high confidentiality, integrity, and availability impact.
Likely exposure
Organizations running Siemens NX or NX Managed Mode below V2512 are potentially exposed, especially on engineering endpoints where PDF export is used. Exposure appears local rather than network-reachable based on the CVSS vector.
Exploitation context
No CISA KEV listing or cited source indicates active exploitation. Exploitation requires local access and user interaction, limiting remote mass-exploitation risk but still presenting serious endpoint compromise potential.
Researcher notes
Evidence is limited to the CVE record and Siemens advisory reference. The advisory identifies affected products and version threshold, but no public exploit status is cited. Avoid assuming attack file formats or delivery mechanisms beyond the PDF export process described.
Mitigation direction
- Identify Siemens NX and NX Managed Mode installations below V2512.
- Upgrade affected installations to V2512 or later, following Siemens guidance.
- Restrict use of untrusted project data on vulnerable engineering workstations.
- Monitor Siemens ProductCERT advisory SSA-535115 for updates.
Validation and detection
- Inventory NX versions across engineering endpoints and managed deployments.
- Confirm whether PDF export workflows are used on affected systems.
- Verify upgraded systems report V2512 or later.
- Review endpoint security logs for suspicious activity around NX usage.
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-121: 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-2026-22923 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://cert-portal.siemens.com/productcert/html/ssa-535115.htmlCVE 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.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.