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Fencer Vulns
critical 9.4

CVE-2021-27442 json

Weintek EasyWeb cMT Cross-site Scripting

published 2022-05-16 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14196

cvss
9.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits
0
none known

Summary

The Weintek cMT product line is vulnerable to a cross-site scripting vulnerability, which could allow an unauthenticated remote attacker to inject malicious JavaScript code.

Patch / fix

  • Weintek cMT-SVR-1xx/2xx 20210305
  • Weintek cMT-G01/G02 20210209
  • Weintek cMT-G03/G04 20210222
  • Weintek cMT3071/cMT3072/cMT3090/cMT3103/cMT3151 20210218
  • Weintek cMT-HDM 20210204
  • Weintek cMT-FHD 20210208
  • Weintek cMT-CTRL01 20210302

Vendor advisories

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

cisa ICSA-21-082-01 updated cvss 9.4

Weintek EasyWeb cMT

  • Weintek cMT-CTRL01 < 20210302 Weintek cMT-FHD < 20210208 Weintek cMT-G01/G02 < 20210209 Weintek cMT-G03/G04 < 20210222 Weintek cMT-HDM < 20210204 Weintek cMT-SVR-1xx/2xx < 20210305
    +1 more products
    Weintek cMT3071/cMT3072/cMT3090/cMT3103/cMT3151 < 20210218
    affected: mitigation “Weintek has released OS upgrades for the affected products. Refer to Weintek's Technical Notice regarding these vulnerabilities.” 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
18 mo ago

Exploit prediction

0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

  • Weintek cMT-SVR-1xx/2xx
  • Weintek cMT-G01/G02
  • Weintek cMT-G03/G04
  • Weintek cMT3071/cMT3072/cMT3090/cMT3103/cMT3151
  • Weintek cMT-HDM
  • Weintek cMT-FHD
  • Weintek cMT-CTRL01

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

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.