CVE-2025-2399 Denial of Service (DoS) Vulnerability in Mitsubishi Electric CNC Series
Remote attackers can cause denial of service on Mitsubishi Electric CNC controllers by sending crafted packets to TCP port 683.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-2399?
CVE-2025-2399 is a medium-severity denial of service vulnerability in Mitsubishi Electric CNC C80 Series C80, published on 10 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-1285
Which versions are affected by CVE-2025-2399?
How do I fix CVE-2025-2399?
No fix has been published for CVE-2025-2399 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-2399 being exploited?
There is no known exploitation of CVE-2025-2399 in the wild and no public exploit code.
Sources
Also known as GHSA-9q59-gxh2-q9mf.