What is the CVSS score of CVE-2023-3346?

CVE-2023-3346 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.7%.

C80 Firmware CVE-2023-3346

CRITICAL

Classic Buffer Overflow (CWE-120)

2023-08-03 Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp

Buffer Overflow RCE Denial Of Service C80 Firmware E70 Firmware E80 Firmware M70V Firmware M720Vs Firmware M720Vs 15 Type Firmware M720Vw Firmware M730Vs Firmware M730Vs 15 Type Firmware M730Vw Firmware M750Vs Firmware M750Vs 15 Type Firmware M750Vw Firmware M80 Firmware M800S Firmware M800Vs Firmware M800Vw Firmware M800W Firmware M80V Firmware M80Vw Firmware M80W Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Aug 03, 2023 - 05:15 nvd

CRITICAL 9.8

DescriptionNVD

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.

AnalysisAI

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. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. 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. Affected products include: Mitsubishielectric C80 Firmware, Mitsubishielectric E70 Firmware, Mitsubishielectric E80 Firmware, Mitsubishielectric M70V Firmware, Mitsubishielectric M720Vs Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.