Full Report
[Control systems] CISA ICS security advisories (AV26–324)
Analysis Summary
Based on the CISA ICS security advisories (AV26–324) summarized by the Canadian Centre for Cyber Security, here is the breakdown of the identified vulnerabilities.
*Note: Since the source article is a summary listing multiple advisories, the details below aggregate the high-impact vulnerabilities mentioned.*
# Vulnerability: Multiple Vulnerabilities in Industrial Control Systems (CISA AV26–324)
## CVE Details
- **CVE ID:** CVE-2026-1579 (and others associated with referenced vendors)
- **CVSS Score:** Varies by product (Typically High/Critical for ICS advisories)
- **CWE:** Included but not limited to CWE-20 (Improper Input Validation) and CWE-287 (Improper Authentication).
## Affected Systems
- **Anritsu:**
- Remote Spectrum Monitor MS27100 (All versions)
- Remote Spectrum Monitor MS27101A (All versions)
- Remote Spectrum Monitor MS27102A (All versions)
- Remote Spectrum Monitor MS27103A (All versions)
- **Hitachi Energy:**
- Ellipse (Version 9.0.50 and prior)
- **PX4 Autopilot:**
- v1.16.0_SITL_latest_stable (Specifically CVE-2026-1579)
- **Siemens:**
- CPCI85 Central Processing/Communication RTUM85 RTU Base (Versions prior to V26.10)
- CPCI85 Central Processing/Communication SICORE Base system (Versions prior to V26.10)
- **Yokogawa:**
- CENTUM VP (Multiple versions)
## Vulnerability Description
The vulnerabilities across these products range from improper input validation in drone autopilot systems (PX4) to authentication bypasses and sensitive data exposure in power grid communication modules (Siemens/Hitachi) and spectrum monitoring equipment (Anritsu).
## Exploitation
- **Status:** Not exploited (No reports of active exploitation in the wild at the time of publication).
- **Complexity:** Low to Medium
- **Attack Vector:** Primarily Network (Remote)
## Impact
- **Confidentiality:** High (Potential exposure of sensitive infrastructure data)
- **Integrity:** High (Risk of unauthorized command execution or configuration changes)
- **Availability:** High (Risk of Denial of Service (DoS) to critical monitoring and control systems)
## Remediation
### Patches
- **Siemens:** Upgrade CPCI85 products to **V26.10** or later.
- **Hitachi Energy:** Ellipse users should consult Hitachi Energy support for patching instructions beyond version 9.0.50.
- **Yokogawa/PX4:** Apply the latest firmware/software updates as specified in vendor-specific security portals.
### Workarounds
- **Network Segmentation:** Ensure ICS/SCADA devices are not accessible from the public internet.
- **Firewall Filtering:** Use VPNs or secure tunnels for remote access to Anritsu Remote Spectrum Monitors.
- **Least Privilege:** Restrict user permissions within Hitachi Energy Ellipse environments.
## Detection
- **Indicators of Compromise:** Unexplained reboots of RTU modules or unauthorized configuration changes in CENTUM VP.
- **Detection Methods:** Monitor ICS network traffic for unusual industrial protocol packets (DNP3, Modbus, etc.) originating from external IP addresses. Perform regular audits of log files for these systems.
## References
- CISA ICS Advisories: hxxps[://]www[.]cisa[.]gov/news-events/cybersecurity-advisories
- Canadian Centre for Cyber Security: hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/control-systems-cisa-ics-security-advisories-av26-324