What is CVE-2023-3346?

CVE-2023-3346 is a critical-severity vulnerability in Mitsubishielectric C80, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-08-03.

How severe is CVE-2023-3346?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Mitsubishielectric C80

CVE-2023-3346

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in MITSUBSHI CNC Series allows a remote unauthenticated attacker to cause Denial of Service (DoS) condition and execute arbitrary code on the product by sending specially crafted packets. In addition, system reset is required for recovery.

Vulnerability class: Buffer Overflow

EPSS: 0.021 (79.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp (vendor-advisory, Vendor Advisory)
Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp (Third Party Advisory, government-resource)
Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp (US Government Resource, Third Party Advisory, government-resource)

Frequently asked questions

What is CVE-2023-3346?: CVE-2023-3346 is a critical-severity vulnerability in Mitsubishielectric C80, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-08-03.
How severe is CVE-2023-3346?: Critical severity. CVSS v3 base score is 9.8 out of 10.