CVE-2025-2399
MediumCVSS 5.9Exploitation Probability (EPSS)
Low risk42th percentile - higher than 42% of all known CVEs
Summary
In Mitsubishi Electric CNC series M800V, M80V, M800, M80, E80, C80, M700V, M70V, and E70, there is a vulnerability due to improper validation of index, position, or offset in input. A remote attacker can send specially crafted packets to TCP port 683, causing an out-of-bounds read and resulting in a denial-of-service condition.
Risk Assessment
The attack can cause unavailability of CNC systems, disrupting production processes and potentially requiring technical intervention.
Recommendation
Apply updates provided by the vendor and restrict access to TCP port 683 to trusted devices only.
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Original NVD description (English source)
Improper Validation of Specified Index, Position, or Offset in Input vulnerability in Mitsubishi Electric CNC M800V Series M800VW and M800VS, M80V Series M80V and M80VW, M800 Series M800W and M800S, M80 Series M80 and M80W, E80 Series E80, C80 Series C80, and M700V Series M750VW, M720VW, 730VW, M720VS, M730VS, and M750VS, M70V Series M70V, E70 Series E70 allows a remote attacker to cause an out-of-bounds read, resulting in a denial-of-service condition by sending specially crafted packets to TCP port 683.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

