A vulnerability has been identified in SIMATIC WinCC Unified PC Runtime V16 (All…
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
A vulnerability has been identified in SIMATIC WinCC Unified PC Runtime V16 (All versions), SIMATIC WinCC Unified PC Runtime V17 (All versions), SIMATIC WinCC Unified PC Runtime V18 (All versions), SIMATIC WinCC Unified PC Runtime V19 (All versions), SIMATIC WinCC Unified PC Runtime V20 (All versions), SIMATIC WinCC Unified PC Runtime V21 (All versions < V21 Update 2). Insufficient protection of key material in WinCC Certificate Manager that could allow an attacker to extract sensitive information.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Siemens | SIMATIC WinCC Unified PC Runtime V16 | all versions | — | No fix listed | CNA |
| Siemens | SIMATIC WinCC Unified PC Runtime V17 | all versions | — | No fix listed | CNA |
| Siemens | SIMATIC WinCC Unified PC Runtime V18 | all versions | — | No fix listed | CNA |
| Siemens | SIMATIC WinCC Unified PC Runtime V19 | all versions | — | No fix listed | CNA |
| Siemens | SIMATIC WinCC Unified PC Runtime V20 | all versions | — | No fix listed | CNA |
| Siemens | SIMATIC WinCC Unified PC Runtime V21 | before V21 Update 2 | V21 Update 2 | Patch available | CNA |
- SIMATIC WinCC Unified PC Runtime V16 VendorSiemens Affected all versions Fixed in — No fix listed CNA
- SIMATIC WinCC Unified PC Runtime V17 VendorSiemens Affected all versions Fixed in — No fix listed CNA
- SIMATIC WinCC Unified PC Runtime V18 VendorSiemens Affected all versions Fixed in — No fix listed CNA
- SIMATIC WinCC Unified PC Runtime V19 VendorSiemens Affected all versions Fixed in — No fix listed CNA
- SIMATIC WinCC Unified PC Runtime V20 VendorSiemens Affected all versions Fixed in — No fix listed CNA
- SIMATIC WinCC Unified PC Runtime V21 VendorSiemens Affected before V21 Update 2 Fixed in V21 Update 2 Patch available CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:siemens:simatic_wincc_unified_pc_runtime:*:*:*:*:*:*:*:* | 16 – 20 | Vulnerable | Siemens |
| cpe:2.3:a:siemens:simatic_wincc_unified_pc_runtime:21:-:*:*:*:*:*:* | 21 | Vulnerable | Siemens |
| cpe:2.3:a:siemens:simatic_wincc_unified_pc_runtime:21:update1:*:*:*:*:*:* | 21 update1 | Vulnerable | Siemens |
- cpe:2.3:a:siemens:simatic_wincc_unified_pc_runtime:*:*:*:*:*:*:*:* Versions 16 – 20 Vulnerable ·Siemens
- cpe:2.3:a:siemens:simatic_wincc_unified_pc_runtime:21:-:*:*:*:*:*:* Versions 21 Vulnerable ·Siemens
- cpe:2.3:a:siemens:simatic_wincc_unified_pc_runtime:21:update1:*:*:*:*:*:* Versions 21 update1 Vulnerable ·Siemens
Remediation
- Fix · CNA SIMATIC WinCC Unified PC Runtime V21 (Siemens) Fixed in V21 Update 2
Timeline
- 2026-10-02 Threatist record created from CVE-2026-24349
- 2026-10-03 Alias added: GHSA-vxrh-p77g-j346
References
Sources
- CVE-2026-24349 · CVE Program
- CVE-2026-24349 · NVD
- FIRST EPSS
- GHSA-vxrh-p77g-j346 · GitHub Advisory Database · CC BY 4.0
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