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9.8
CRITICAL CVSS 3.1
CVE-2023-3346
Denial of Service (DoS) and Remote Code Execution Vulnerability in MITSUBISHI CNC Series
Overview
Description

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.

Details
INFO

Published Date :

Aug. 3, 2023, 5:15 a.m.

Last Modified :

June 17, 2026, 6:13 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2023-3346 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mitsubishielectric c80_firmware
2 Mitsubishielectric e70_firmware
3 Mitsubishielectric e80_firmware
4 Mitsubishielectric m70v_firmware
5 Mitsubishielectric m720vs_firmware
6 Mitsubishielectric m720vs_15-type_firmware
7 Mitsubishielectric m720vw_firmware
8 Mitsubishielectric m730vs_firmware
9 Mitsubishielectric m730vs_15-type_firmware
10 Mitsubishielectric m730vw_firmware
11 Mitsubishielectric m750vs_firmware
12 Mitsubishielectric m750vs_15-type_firmware
13 Mitsubishielectric m750vw_firmware
14 Mitsubishielectric m80_firmware
15 Mitsubishielectric m800s_firmware
16 Mitsubishielectric m800vs_firmware
17 Mitsubishielectric m800vw_firmware
18 Mitsubishielectric m800w_firmware
19 Mitsubishielectric m80v_firmware
20 Mitsubishielectric m80vw_firmware
21 Mitsubishielectric m80w_firmware
22 Mitsubishielectric c80
23 Mitsubishielectric e70
24 Mitsubishielectric e80
25 Mitsubishielectric m70v
26 Mitsubishielectric m720vs
27 Mitsubishielectric m720vs_15-type
28 Mitsubishielectric m720vw
29 Mitsubishielectric m730vs
30 Mitsubishielectric m730vs_15-type
31 Mitsubishielectric m730vw
32 Mitsubishielectric m750vs
33 Mitsubishielectric m750vs_15-type
34 Mitsubishielectric m750vw
35 Mitsubishielectric m80
36 Mitsubishielectric m800s
37 Mitsubishielectric m800vs
38 Mitsubishielectric m800vw
39 Mitsubishielectric m800w
40 Mitsubishielectric m80v
41 Mitsubishielectric m80vw
42 Mitsubishielectric m80w
: Total Affected Vendor : 1 | Products : 42
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS 3.1 CRITICAL [email protected]
CVSS 3.1 CRITICAL [email protected]
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-3346.

URL Resource
https://jvn.jp/vu/JVNVU90352157/index.html Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-23-208-03 Third Party Advisory US Government Resource
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-007_en.pdf Vendor Advisory
https://jvn.jp/vu/JVNVU90352157/index.html Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-23-208-03 Third Party Advisory US Government Resource
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-007_en.pdf Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-3346 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-3346 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-92: Forced Integer Overflow Forced Integer Overflow CAPEC-100: Overflow Buffers Overflow Buffers

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-3346 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2023-3346 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    Jun. 17, 2026

    Action Type Old Value New Value
    Added Affected [{'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M800V Series M800VW', 'versions': [{'status': 'affected', 'version': 'System Number BND-2051W000 versions A8 and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M800V Series M800VS', 'versions': [{'status': 'affected', 'version': 'System Number BND-2052W000 versions A8 and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M80V Series M80V', 'versions': [{'status': 'affected', 'version': 'System Number BND-2053W000 versions A8 and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M80V Series M80VW', 'versions': [{'status': 'affected', 'version': 'System Number BND-2054W000 versions A8 and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M800 Series M800W', 'versions': [{'status': 'affected', 'version': 'System Number BND-2005W000 versions FB and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M800 Series M800S', 'versions': [{'status': 'affected', 'version': 'System Number BND-2006W000 versions FB and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M80 Series M80', 'versions': [{'status': 'affected', 'version': 'System Number BND-2007W000 versions FB and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M80 Series M80W', 'versions': [{'status': 'affected', 'version': 'System Number BND-2008W000 versions FB and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC E80 Series E80', 'versions': [{'status': 'affected', 'version': 'System Number BND-2009W000 versions FB and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC C80 Series C80', 'versions': [{'status': 'affected', 'version': 'System Number BND-2036W000 versions BF and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M700V Series M720VW', 'versions': [{'status': 'affected', 'version': 'System Number BND-1015W000 versions LF and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M700V Series M730VW', 'versions': [{'status': 'affected', 'version': 'System Number BND-1015W000 versions LF and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M700V Series M750VW', 'versions': [{'status': 'affected', 'version': 'System Number BND-1015W002 versions LF and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M700V Series M720VS', 'versions': [{'status': 'affected', 'version': 'System Number BND-1012W000 versions LF and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M700V Series M730VS', 'versions': [{'status': 'affected', 'version': 'System Number BND-1012W000 versions LF and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M700V Series M750VS', 'versions': [{'status': 'affected', 'version': 'System Number BND-1012W002 versions LF and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC M70V Series M70V', 'versions': [{'status': 'affected', 'version': 'System Number BND-1018W000 versions LF and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC E70 Series E70', 'versions': [{'status': 'affected', 'version': 'System Number BND-1022W000 versions LF and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC IoT Unit Remote Service Gateway Unit', 'versions': [{'status': 'affected', 'version': 'System Number BND-2041W001 versions AD and prior'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Mitsubishi Electric Corporation', 'product': 'MITSUBISHI CNC IoT Unit Data Acquisition Unit', 'versions': [{'status': 'affected', 'version': 'System Number BND-2041W002 all versions'}], 'defaultStatus': 'unaffected'}]
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jun. 17, 2026

    Action Type Old Value New Value
    Added SSVC {'id': 'CVE-2023-3346', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2024-12-04T15:16:27.660728Z'}
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://jvn.jp/vu/JVNVU90352157/index.html
    Added Reference https://www.cisa.gov/news-events/ics-advisories/icsa-23-208-03
    Added Reference https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-007_en.pdf
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Aug. 11, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://jvn.jp/vu/JVNVU90352157/index.html No Types Assigned https://jvn.jp/vu/JVNVU90352157/index.html Third Party Advisory
    Changed Reference Type https://www.cisa.gov/news-events/ics-advisories/icsa-23-208-03 No Types Assigned https://www.cisa.gov/news-events/ics-advisories/icsa-23-208-03 Third Party Advisory, US Government Resource
    Changed Reference Type https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-007_en.pdf No Types Assigned https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-007_en.pdf Vendor Advisory
    Added CWE NIST CWE-120
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:c80_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:c80:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:e70_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:e70:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:e80_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:e80:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m70v_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m70v:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m720vs_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m720vs:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m720vs_15-type_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m720vs_15-type:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m720vw_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m720vw:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m730vs_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m730vs:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m730vs_15-type_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m730vs_15-type:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m730vw_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m730vw:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m750vs_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m750vs:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m750vs_15-type_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m750vs_15-type:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m750vw_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m750vw:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m80_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m80:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m800s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m800s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m800vs_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m800vs:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m800vw_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m800vw:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m800w_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m800w:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m80v_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m80v:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m80vw_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m80vw:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mitsubishielectric:m80w_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mitsubishielectric:m80w:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 9.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
EPSS
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

1.67 }} -0.04%

score

0.73690

percentile