CVE-2022-40265 Denial of Service (DoS) Vulnerability in MELSEC iQ-R Series Ethernet Interface Module
Remote unauthenticated attackers can cause a denial of service in Mitsubishi MELSEC iQ-R Ethernet modules by sending crafted packets, requiring a system reset.
- 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-2022-40265?
CVE-2022-40265 is a high-severity denial of service vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120ENCPU, published on 30 Nov 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper Input Validation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series RJ71EN71 Firmware version "65" and prior and Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120ENCPU Network Part Firmware version "65" and prior allows a remote unauthenticated attacker to cause a Denial of Service condition by sending specially crafted packets. A system reset is required for recovery.
Weakness: CWE-20
Which versions are affected by CVE-2022-40265?
It affects 6 products.
Products include Mitsubishielectric R04encpu Firmware, Mitsubishielectric R08encpu Firmware, Mitsubishielectric R120encpu Firmware, Mitsubishielectric R16encpu Firmware, Mitsubishielectric R32encpu Firmware, Mitsubishielectric Rj71en71 Firmware.
How do I fix CVE-2022-40265?
No fix has been published for CVE-2022-40265 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-2022-40265 being exploited?
There is no known exploitation of CVE-2022-40265 in the wild and no public exploit code.
Sources
Also known as GHSA-vgcx-cp27-7f7h.