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Fencer Vulns
critical 9.8

CVE-2022-42785 json

Wiesemann & Theis: Authentication bypass in Com-Server family

published 2022-11-10 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-45848

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

Multiple W&T products of the ComServer Series are prone to an authentication bypass. An unathenticated remote attacker, can log in without knowledge of the password by crafting a modified HTTP GET Request.

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

1.21% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

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

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-306 Missing Authentication for Critical Functionality

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.