ICSA-26-174-01: Siemens WinCC Certificate Manager
CISA advisory · released 2026-06-09
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 2, 2026-06-23 (final)
CISA's summary
Summary: WinCC Certificate Manager insufficiently protects key material that could allow an attacker to extract sensitive information. Siemens has released a new version for SIMATIC WinCC Unified PC Runtime V21 and recommends to update to the latest version. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | SIMATIC WinCC Unified PC Runtime V16 | vers:all/* |
| Siemens | SIMATIC WinCC Unified PC Runtime V17 | vers:all/* |
| Siemens | SIMATIC WinCC Unified PC Runtime V18 | vers:all/* |
| Siemens | SIMATIC WinCC Unified PC Runtime V19 | vers:all/* |
| Siemens | SIMATIC WinCC Unified PC Runtime V20 | vers:all/* |
| Siemens | SIMATIC WinCC Unified PC Runtime V21 | vers:intdot/<21.0.2 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2026-24349 — CVE-2026-24349 · CWE-313
Insufficient protection of key material in WinCC Certificate Manager that could allow an attacker to extract sensitive information.
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reported this vulnerability to CISA.
The advisory's legal notice
The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.
Sources
DeSpy's copy of this version is dated 2026-09-28.
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