Security readout for executives and security teams
Siemens reports a high-severity flaw in CPCI85 Central Processing/Communication and SICORE Base system. A remote unauthenticated attacker could send a malicious XML request that crashes the service, causing denial of service. This is most urgent where these systems support operational availability or traffic-related services. Exposure is likely limited to organizations running affected Siemens CPCI85 or SICORE Base deployments, especially if the XML-handling service is reachable over a network. Internet exposure is not stated in the provided sources. Prioritize if these Siemens systems support critical operations or are reachable from less-trusted networks. The main confirmed business risk is service outage, not data theft or system takeover based on current sources. Mitigation focus: Review Siemens advisory SSA-246443 for product-specific remediation guidance.; Upgrade CPCI85 to V26.10 or later where applicable.; Upgrade SICORE Base system to V26.10.0 or later where applicable..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-787: Exact CWE lookup
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Open ATT&CK lookupCVE-2026-27664 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.7 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
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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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- https://cert-portal.siemens.com/productcert/html/ssa-246443.htmlCVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.