Improper access control in Siemens PCS neo
Priority LOW 36CWE-284Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass, Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-284 and CWE-427.
Summary
A vulnerability has been identified in PCS neo (Administration Console) (All versions < V3.1), TIA Portal (V15, V15.1 and V16). Manipulating certain files in specific folders could allow a local attacker to execute code with SYSTEM privileges. The security vulnerability could be exploited by an attacker with a valid account and limited access rights on the system.
Why it matters now
EPSS 0.00899 59th percentileScored 2026-11-07
Fix Fixed PCS neo (Administration Console) (Siemens): V3.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Siemens | PCS neo (Administration Console) | before V3.1 | V3.1 | Patch available | CNA |
| Siemens | TIA Portal | V15, V15.1 and V16 | — | No fix listed | CNA |
- PCS neo (Administration Console) VendorSiemens Affected before V3.1 Fixed in V3.1 Patch available CNA
- TIA Portal VendorSiemens Affected V15, V15.1 and V16 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:siemens:simatic_process_control_system_neo:*:*:*:*:*:*:*:* | before 3.1 | Vulnerable | Siemens |
| cpe:2.3:a:siemens:totally_integrated_automation_portal:15:*:*:*:*:*:*:* | 15 | Vulnerable | Siemens |
| cpe:2.3:a:siemens:totally_integrated_automation_portal:15.1:*:*:*:*:*:*:* | 15.1 | Vulnerable | Siemens |
| cpe:2.3:a:siemens:totally_integrated_automation_portal:16:*:*:*:*:*:*:* | 16 | Vulnerable | Siemens |
- cpe:2.3:a:siemens:simatic_process_control_system_neo:*:*:*:*:*:*:*:* Versions before 3.1 Vulnerable ·Siemens
- cpe:2.3:a:siemens:totally_integrated_automation_portal:15:*:*:*:*:*:*:* Versions 15 Vulnerable ·Siemens
- cpe:2.3:a:siemens:totally_integrated_automation_portal:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·Siemens
- cpe:2.3:a:siemens:totally_integrated_automation_portal:16:*:*:*:*:*:*:* Versions 16 Vulnerable ·Siemens
Remediation
- Fix · CNA PCS neo (Administration Console) (Siemens) Fixed in V3.1
Timeline
- 2026-10-02 Threatist record created from CVE-2020-25238
- 2026-10-03 Alias added: GHSA-xj9q-pj74-p2j4
References
Sources
- CVE-2020-25238 · CVE Program
- CVE-2020-25238 · NVD
- FIRST EPSS
- GHSA-xj9q-pj74-p2j4 · GitHub Advisory Database · CC BY 4.0
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