Security readout for executives and security teams
This Siemens SIMATIC HMI and WinCC issue can expose encrypted web-interface communications. An attacker with network access who can also observe legitimate TLS traffic may obtain a session key and decrypt that traffic. The primary business risk is loss of confidentiality in industrial operator or engineering communications, not system takeover or outage based on the supplied sources. Exposure is most likely in industrial networks where affected SIMATIC HMI or WinCC web interfaces are reachable from adjacent or operational network segments. Internet exposure is not stated in the sources. SIMATIC HMI Classic Devices are listed as affected in all versions, so they need specific vendor-guided handling. Treat this as a moderate-priority industrial confidentiality issue. It is not described as enabling control-system takeover, but decrypted operator or engineering traffic can expose sensitive process or access information. Prioritize sites with reachable HMI web interfaces, shared network segments, or legacy HMI Classic Devices. Mitigation focus: Upgrade affected V15 products to V15.1 Update 1 or later where supported.; Check Siemens SSA-804486 for product-specific guidance, especially HMI Classic Devices.; Restrict network access to HMI and WinCC web interfaces..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2019-6576 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
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SSVC decision data
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:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N2.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://cert-portal.siemens.com/productcert/pdf/ssa-804486.pdfCVE reference, siemens · x_refsource_MISC
- https://www.us-cert.gov/ics/advisories/ICSA-19-134-09CVE reference, siemens · x_refsource_MISC
Products and packages named in the record
CWE details
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Cryptographic Issues
Cryptographic Issues represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.