PatchSiren

PatchSiren cyber security CVE debrief

CVE-2024-34579 Fuji Electric CVE debrief

CVE-2024-34579 is a stack-based buffer overflow vulnerability in Fuji Electric Alpha5 SMART servo systems, rated HIGH severity (CVSS 7.8). Published on January 16, 2025, this vulnerability allows an attacker to execute arbitrary code on affected systems. The vulnerability affects Alpha5 SMART version 4.5 and earlier. Fuji Electric has stated that this vulnerability will not be patched in the Alpha5 SMART product line; instead, users are advised to upgrade to the Alpha7 series. This represents a significant end-of-life security scenario where remediation requires hardware migration rather than software patching. The vulnerability requires local access with user interaction, but successful exploitation grants high impact across confidentiality, integrity, and availability.

Vendor
Fuji Electric
Product
Alpha5 SMART
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2025-01-16
Original CVE updated
2025-01-16
Advisory published
2025-01-16
Advisory updated
2025-01-16

Who should care

Organizations operating Fuji Electric Alpha5 SMART servo systems in manufacturing, automation, and industrial environments. OT security teams responsible for servo drive infrastructure. Asset owners with Alpha5 SMART deployments requiring security maintenance planning. System integrators and maintenance providers supporting Fuji Electric servo installations.

Technical summary

A stack-based buffer overflow vulnerability exists in Fuji Electric Alpha5 SMART servo systems (version 4.5 and earlier). The vulnerability can be triggered to execute arbitrary code with high impact on system confidentiality, integrity, and availability. The attack vector is local with required user interaction. Fuji Electric has explicitly declined to patch this vulnerability in the Alpha5 SMART product line, directing customers to upgrade to Alpha7 as the sole remediation path.

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade affected Alpha5 SMART systems to Fuji Electric Alpha7 series as vendor will not provide patches for Alpha5 SMART
  • Contact Fuji Electric support for migration assistance and technical guidance
  • Implement network segmentation to isolate affected servo systems from untrusted networks
  • Restrict physical and logical access to Alpha5 SMART configuration interfaces to authorized personnel only
  • Monitor for anomalous behavior or unauthorized access attempts on Alpha5 SMART systems
  • Review and apply CISA ICS recommended practices for defense-in-depth strategies
  • Establish timeline for complete phase-out of Alpha5 SMART deployments based on operational criticality

Evidence notes

Vulnerability details sourced from CISA ICS Advisory ICSA-25-016-05. CVSS 3.1 vector: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Affected product confirmed as Fuji Electric Alpha5 SMART <=4.5. Vendor explicitly states no fix will be provided for Alpha5 SMART; upgrade to Alpha7 required.

Official resources

2025-01-16