Auth bypass in Mitsubishielectric Ezsocket
CVE-2023-6942
Missing Authentication for Critical Function vulnerability in Mitsubishi Electric Corporation EZSocket versions 3.0 to 5.92, GT Designer3 Version1(GOT1000) versions 1.325P and prior, GT Designer3 Version1(GOT2000) versions 1.320J and prior, GX Works2 versions 1.11M to 1.626C, GX Works3 versions 1.106L and prior, MELSOFT Navigator versions 1.04E to 2.102G, MT Works2 versions 1.190Y and prior, MX Component versions 4.00A to 5.007H and MX OPC Server DA/UA all versions allows a remote unauthenticated attacker to bypass authentication by sending specially crafted packets and connect to the products illegally.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.009 (60.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-020_en.pdf (vendor-advisory, Vendor Advisory)
- jvn.jp/vu/JVNVU95103362 (Third Party Advisory, government-resource)
- www.cisa.gov/news-events/ics-advisories/icsa-24-030-02 (US Government Resource, Third Party Advisory, government-resource)
Frequently asked questions
- What is CVE-2023-6942?
- CVE-2023-6942 is a high-severity vulnerability in Mitsubishielectric Ezsocket, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2024-01-30.
- How severe is CVE-2023-6942?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-6942 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.