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CVE-2023-6943

30
FAUCET Score

CVE-2023-6943 is a critical 'Unsafe Reflection' vulnerability affecting numerous Mitsubishi Electric products, including EZSocket, GT Designer3, GX Works2/3, MELSOFT Navigator, MT Works2, and MX Component. This flaw allows a remote, unauthenticated attacker to execute arbitrary malicious code by sending a crafted RPC request containing a path to a malicious library. With a CVSS score of 9.8, this vulnerability poses a severe risk, enabling full compromise of confidentiality, integrity, and availability of affected systems. While there is no public exploit code (Metasploit, Nuclei, ExploitDB) or KEV entry, the vulnerability has garnered significant community discussion and media coverage, indicating high awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0CPE matchmatch criteria
cpe:2.3:a:mitsubishielectric:ezsocket:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:mitsubishielectric:fr_configurator2:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:mitsubishielectric:got1000:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:mitsubishielectric:got2000:*:*:*:*:*:*:*:*
>= 1.11mCPE matchmatch criteria
cpe:2.3:a:mitsubishielectric:gx_works2:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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 Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.84%
Probability of exploitation in next 30 days
EPSS Percentile
76.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0184 is in the 65th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jvn.jp / vu/JVNVU95103362
Third Party Advisory
cisa.gov / news-events/ics-advisories/icsa-24-030-02
Third Party AdvisoryUS Government Resource
mitsubishielectric.com / en/psirt/vulnerability/pdf/2023-020_en.pdf
Vendor Advisory