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Fencer Vulns
critical 9.8

CVE-2023-43492 json

Weintek cMT3000 HMI Web CGI Stack-based Buffer Overflow

published 2023-10-19 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-47907

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

In Weintek's cMT3000 HMI Web CGI device, the cgi-bin codesys.cgi contains a stack-based buffer overflow, which could allow an anonymous attacker to hijack control flow and bypass login authentication.

Patch / fix

  • weintek cmt-fhd_firmware 20210212
  • weintek cmt-hdm_firmware 20210206
  • weintek cmt3071_firmware 20210220
  • weintek cmt3072_firmware 20210220
  • weintek cmt3090_firmware 20210220
  • weintek cmt3103_firmware 20210220
  • weintek cmt3151_firmware 20210220

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-285-12 updated cvss 9.8

Weintek cMT3000 HMI Web CGI

  • Weintek cMT-FHD <=20210210 Weintek cMT-HDM <=20210204 Weintek cMT3071 <=20210218 Weintek cMT3072 <=20210218 Weintek cMT3090 <=20210218 Weintek cMT3103 <=20210218
    +1 more products
    Weintek cMT3151 <=20210218
    affected: vendor fix, mitigation “Weintek recommends users follow their Upgrade Instructions to update the following products to the latest versions:” dl.weintek.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
21 mo ago

Exploit prediction

1.11% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • dl.weintek.com https://dl.weintek.com/public/Document/TEC/TEC23005E_cMT_Web_Security_Update.pdf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Weintek cMT-FHD
  • Weintek cMT-HDM
  • Weintek cMT3071
  • Weintek cMT3072
  • Weintek cMT3103
  • Weintek cMT3090
  • Weintek cMT3151

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.