Authentication bypass in Siemens SIMATIC PCS 7
Priority LOW 25CWE-288Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-288.
Summary
A vulnerability has been identified in SIMATIC PCS 7 (All versions), SIMATIC WinCC (All versions < V7.5 SP2). Due to an insecure password verification process, an attacker could bypass the password protection set on protected files, thus being granted access to the protected content, circumventing authentication.
Why it matters now
EPSS 0.0034 27th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 | SIMATIC PCS 7 | All versions | — | No fix listed | CNA |
| Siemens | SIMATIC WinCC | All versions < V7.5 SP2 | — | No fix listed | CNA |
- SIMATIC PCS 7 VendorSiemens Affected All versions Fixed in — No fix listed CNA
- SIMATIC WinCC VendorSiemens Affected All versions < V7.5 SP2 Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:siemens:simatic_pcs_7:*:*:*:*:*:*:*:* | all versions | Vulnerable | Siemens |
| cpe:2.3:a:siemens:simatic_wincc:*:*:*:*:*:*:*:* | before 7.5 | Vulnerable | Siemens |
| cpe:2.3:a:siemens:simatic_wincc:7.5:sp1:*:*:*:*:*:* | 7.5 sp1 | Vulnerable | Siemens |
| cpe:2.3:a:siemens:simatic_wincc:7.5:sp1_update1:*:*:*:*:*:* | 7.5 sp1_update1 | Vulnerable | Siemens |
| cpe:2.3:a:siemens:simatic_wincc:7.5:sp1_update2:*:*:*:*:*:* | 7.5 sp1_update2 | Vulnerable | Siemens |
- cpe:2.3:a:siemens:simatic_pcs_7:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
- cpe:2.3:a:siemens:simatic_wincc:*:*:*:*:*:*:*:* Versions before 7.5 Vulnerable ·Siemens
- cpe:2.3:a:siemens:simatic_wincc:7.5:sp1:*:*:*:*:*:* Versions 7.5 sp1 Vulnerable ·Siemens
- cpe:2.3:a:siemens:simatic_wincc:7.5:sp1_update1:*:*:*:*:*:* Versions 7.5 sp1_update1 Vulnerable ·Siemens
- cpe:2.3:a:siemens:simatic_wincc:7.5:sp1_update2:*:*:*:*:*:* Versions 7.5 sp1_update2 Vulnerable ·Siemens
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-10048
- 2026-10-03 Alias added: GHSA-vmjg-j3qq-h4fv
References
More Siemens Simatic Pcs 7 vulnerabilities
- TI-2014-07026 The WinCC server in Siemens SIMATIC WinCC 7.0 through SP3, 7.2 before Update 9, and 7.3… CVSS 2.0HIGH 10.0
- TI-2019-08143 Missing authentication in Siemens SIMATIC PCS 7 V8.0 and earlier CVSS 3.1CRITICAL 9.8
- TI-2023-11164 Code injection in Siemens SIMATIC PCS 7 CVSS 3.1CRITICAL 10.0
- TI-2021-17429 Path traversal in Siemens SIMATIC PCS 7 V8.2 CVSS 3.1CRITICAL 9.9
- TI-2019-08139 A vulnerability has been identified in SIMATIC PCS 7 V8.0 and earlier (All versions)… CVSS 3.1HIGH 8.8
- TI-2019-08137 SQL injection in Siemens SIMATIC PCS 7 V8.0 and earlier CVSS 3.1HIGH 8.8
Sources
- CVE-2020-10048 · CVE Program
- CVE-2020-10048 · NVD
- FIRST EPSS
- GHSA-vmjg-j3qq-h4fv · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences