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CVE-2025-2399: Denial of Service (DoS) Vulnerability in Mitsubishi Electric CNC Series

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-10 · updated 2026-08-27
• Weakness: CWE-1285

Description

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.

Affected products

• Mitsubishi Electric Corporation Mitsubishi Electric CNC C80 Series C80: System Number BND-2036W000 all versions
• Mitsubishi Electric Corporation Mitsubishi Electric CNC E70 Series E70: through System Number BND-1022W000 versions LJ
• Mitsubishi Electric Corporation Mitsubishi Electric CNC E80 Series E80: through System Number BND-2009W000 versions FM
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M700V Series M720VS: through System Number BND-1012W000 versions LJ
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M700V Series M720VW: through System Number BND-1015W000 versions LJ
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M700V Series M730VS: through System Number BND-1012W000 versions LJ
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M700V Series M730VW: through System Number BND-1015W000 versions LJ
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M700V Series M750VS: through System Number BND-1012W002 versions LJ
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M700V Series M750VW: through System Number BND-1015W002 versions LJ
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M70V Series M70V: through System Number BND-1018W000 versions LJ
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M800 Series M800S: through System Number BND-2006W000 versions FM
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M800 Series M800W: through System Number BND-2005W000 versions FM
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M800V Series M800VS: through System Number BND-2052W000 versions BB
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M800V Series M800VW: through System Number BND-2051W000 versions BB
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M80 Series M80: through System Number BND-2007W000 versions FM
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M80 Series M80W: through System Number BND-2008W000 versions FM
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M80V Series M80V: through System Number BND-2053W000 versions BB
• Mitsubishi Electric Corporation Mitsubishi Electric CNC M80V Series M80VW: through System Number BND-2054W000 versions BB

References

• https://jvn.jp/vu/JVNVU95523788/
• https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2025-022_en.pdf

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