CVE-2023-3346
Denial of Service (DoS) and Remote Code Execution Vulnerability in MITSUBISHI CNC Series
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Denial of Service (DoS) and Remote Code Execution Vulnerability in MITSUBISHI CNC Series
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.
- Record
CVE-2023-3346- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-120
- Updated
- 2026-11-02
EUVDEUVD-2023-44014
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.
- Record
EUVD-2023-44014- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-whh9-m2fc-3q2v
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in MITSUBSHI...
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.
- Record
GHSA-whh9-m2fc-3q2v- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-120
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2023-3346- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-120
- Updated
- 2026-11-02
Affected products
- mitsubishi electric corporation cnc c80 series c80
- mitsubishi electric corporation cnc e70 series e70
- mitsubishi electric corporation cnc e80 series e80
- mitsubishi electric corporation cnc iot unit data acquisition unit
- mitsubishi electric corporation cnc iot unit remote service gateway unit
- mitsubishi electric corporation cnc m700v series m720vs
- mitsubishi electric corporation cnc m700v series m720vw
- mitsubishi electric corporation cnc m700v series m730vs
- mitsubishi electric corporation cnc m700v series m730vw
- mitsubishi electric corporation cnc m700v series m750vs
- mitsubishi electric corporation cnc m700v series m750vw
- mitsubishi electric corporation cnc m70v series m70v
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- mitsubishi electric corporation cnc m80 series m80
- mitsubishi electric corporation cnc m80 series m80w
- mitsubishi electric corporation cnc m800 series m800s
- mitsubishi electric corporation cnc m800 series m800w
- mitsubishi electric corporation cnc m800v series m800vs
- mitsubishi electric corporation cnc m800v series m800vw
- mitsubishi electric corporation cnc m80v series m80v
- mitsubishi electric corporation cnc m80v series m80vw
- mitsubishielectric c80 firmware
- mitsubishielectric e70 firmware
- mitsubishielectric e80 firmware
- mitsubishielectric m70v firmware
- mitsubishielectric m720vs 15-type firmware
- mitsubishielectric m720vs firmware
- mitsubishielectric m720vw firmware
- mitsubishielectric m730vs 15-type firmware
- mitsubishielectric m730vs firmware
- mitsubishielectric m730vw firmware
- mitsubishielectric m750vs 15-type firmware
- mitsubishielectric m750vs firmware
- mitsubishielectric m750vw firmware
- mitsubishielectric m800s firmware
- mitsubishielectric m800vs firmware
- mitsubishielectric m800vw firmware
- mitsubishielectric m800w firmware
- mitsubishielectric m80 firmware
- mitsubishielectric m80v firmware
- mitsubishielectric m80vw firmware
- mitsubishielectric m80w firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-3346 is a critical vulnerability (CVSS 9.8) in Mitsubishi Electric Corporation Cnc C80 Series C80, published August 3, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.10%, the 81st percentile. No source names a fixed version.