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Fencer Intel
medium 5.4

CVE-2022-42786 json

Wiesemann & Theis: XSS vulnerability in web interface of the Com-Server family

published 3y ago modified 4mo ago also EUVD-2022-45849

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

Multiple W&T Products of the ComServer Series are prone to an XSS attack. An authenticated remote Attacker can execute arbitrary web scripts or HTML via a crafted payload injected into the title of the configuration webpage

Patch / fix

  • Wiesemann & Theis Com-Server LC 1.48
  • Wiesemann & Theis Com-Server PoE 3 x Isolated 1.48
  • Wiesemann & Theis Com-Server 20mA 1.48
  • Wiesemann & Theis Com-Server ++ 1.48
  • Wiesemann & Theis AT-Modem-Emulator 1.48
  • Wiesemann & Theis Com-Server UL 1.48
  • Wiesemann & Theis Com-Server Highspeed 100BaseFX 1.76
  • Wiesemann & Theis Com-Server Highspeed 100BaseLX 1.76
  • Wiesemann & Theis Com-Server Highspeed Office 1 Port 1.76
  • Wiesemann & Theis Com-Server Highspeed Office 4 Port 1.76
  • Wiesemann & Theis Com-Server Highspeed Industry 1.76
  • Wiesemann & Theis Com-Server Highspeed OEM 1.76
  • Wiesemann & Theis Com-Server Highspeed Compact 1.76
  • Wiesemann & Theis Com-Server Highspeed Isolated 1.76
  • Wiesemann & Theis Com-Server Highspeed 19" 1Port 1.76
  • Wiesemann & Theis Com-Server Highspeed 19" 4Port 1.76
  • Wiesemann & Theis Com-Server Highspeed PoE 1.76

Is CVE-2022-42786 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last yr.

Exploit prediction

0.58% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

  • Wiesemann & Theis Com-Server LC
  • Wiesemann & Theis Com-Server PoE 3 x Isolated
  • Wiesemann & Theis Com-Server 20mA
  • Wiesemann & Theis Com-Server ++
  • Wiesemann & Theis AT-Modem-Emulator
  • Wiesemann & Theis Com-Server UL
  • Wiesemann & Theis Com-Server Highspeed 100BaseFX
  • Wiesemann & Theis Com-Server Highspeed 100BaseLX
  • Wiesemann & Theis Com-Server Highspeed Office 1 Port
  • Wiesemann & Theis Com-Server Highspeed Office 4 Port
  • Wiesemann & Theis Com-Server Highspeed Industry
  • Wiesemann & Theis Com-Server Highspeed OEM
  • Wiesemann & Theis Com-Server Highspeed Compact
  • Wiesemann & Theis Com-Server Highspeed Isolated
  • Wiesemann & Theis Com-Server Highspeed 19" 1Port
  • Wiesemann & Theis Com-Server Highspeed 19" 4Port
  • Wiesemann & Theis Com-Server Highspeed PoE

Classification

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

References

Sources

Fencer Intel 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.