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ICSA-25-084-03: Rockwell Automation 440G TLS-Z ↗ source

March 25, 2025 CISA ICS Advisory

Summary

Successful exploitation of this vulnerability could allow an attacker to take over the device. CVE-2020-27212: A local code execution vulnerability exists in the STMicroelectronics STM32L4 devices due to having incorrect access controls. The affected product utilizes the STMicroelectronics STM32L4 device and because of the vulnerability, a threat actor could reverse protections that control access to the JTAG interface. If exploited, a threat actor can take over the device.

Advisory Details CISA ICS CSAF feed

Advisory ID
ICSA-25-084-03
Status
Final · version 1
Initial release
2025-03-25
Last revised
2025-03-25
Vendor
Rockwell Automation
Critical infrastructure sectors
Commercial Facilities
Deployed
Worldwide
Vendor headquarters
United States

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely. This vulnerability has a high attack complexity.

Credit: Rockwell Automation

Affected products (1)
  • 440G TLS-Z — v6.001

From CISA's machine-readable CSAF 2.0 advisory (JSON).

Vulnerabilities as Stated by the Advisory

CVEWeaknessCVSS v3Details
CVE-2020-27212 CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') 7.0 High A local code execution vulnerability exists in the STMicroelectronics STM32L4 devices due to having incorrect access controls. The affected product utilizes the STMicroelectronics STM32L4 device and because of the vulnerability, a threat actor could reverse protections that control access to the JTAG interface. If exploited, a threat actor can take over the device.

Mitigation: Rockwell Automation encourages users of the affected software to apply the risk mitigations if possible:

Mitigation: Limit physical access to authorized personnel: Control room, cells/areas, control panels, and devices. See Chapter 4, Harden the Control System of System Security Design Guidelines. ↗

Mitigation: For information on how to mitigate security risks on industrial automation control systems, Rockwell Automation encourage users to implement security best practices to minimize the risk of the vulnerability. ↗

Affected, fixed & timeline

Affected:

  • 440G TLS-Z v6.001

Mitigation: For more information refer to Rockwell Automation's security advisory.

Scores and weakness types are as CISA or the republishing vendor stated them in this advisory; the linked CVE pages carry the independently enriched CVSS and SSVC assessments.

News Coverage

No coverage found in monitored research blogs or news feeds.

CVEs Referenced in This Publication

CVECVSSAffected
CVE-2020-27212 — n/a n/a STMicroelectronics STM32L4 devices through 2020-10-19 have incorrect access control. The flash read-out protection (RDP) can be degraded from RDP lev…

Named by the advisory itself. Each CVE links to its tracked detail page.

Vendors Named in This Publication

Each vendor links to its Known Exploited Vulnerabilities catalog page. Only vendors that appear in the KEV catalog are listed, either because the publication cites one of their KEV entries or because it names them directly.