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Fencer Intel
high 8.0

CVE-2022-4098 json

Wiesemann & Theis: Multiple products prone to missing authentication through spoofing

published 3y ago modified 4mo ago also EUVD-2022-51468

cvss
8.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 28%
public exploits
0
none known

Summary

Multiple Wiesemann&Theis products of the ComServer Series are prone to an authentication bypass through IP spoofing. After a user logged in to the WBM of the Com-Server an unauthenticated attacker in the same subnet can obtain the session ID and through IP spoofing change arbitrary settings by crafting modified HTTP Get requests. This may result in a complete takeover of the device.

Patch / fix

  • Wiesemann & Theis Com-Server ++ 1.55
  • Wiesemann & Theis Com-Server 20mA 1.55
  • Wiesemann & Theis Com-Server Highspeed 100BaseFX 1.78
  • Wiesemann & Theis Com-Server Highspeed 100BaseLX 1.78
  • Wiesemann & Theis Com-Server Highspeed 19" 1Port 1.78
  • Wiesemann & Theis Com-Server Highspeed 19" 4Port 1.78
  • Wiesemann & Theis Com-Server Highspeed Compact 1.78
  • Wiesemann & Theis Com-Server Highspeed Industry 1.78
  • Wiesemann & Theis Com-Server Highspeed Isolated 1.78
  • Wiesemann & Theis Com-Server Highspeed OEM 1.78
  • Wiesemann & Theis Com-Server Highspeed Office 1 Port 1.78
  • Wiesemann & Theis Com-Server Highspeed Office 4 Port 1.78
  • Wiesemann & Theis Com-Server Highspeed PoE 1.78
  • Wiesemann & Theis Com-Server LC 1.55
  • Wiesemann & Theis Com-Server PoE 3 x Isolated 1.55
  • Wiesemann & Theis Com-Server UL 1.55

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last yr.

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 8.0 CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

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

Classification

Weakness
  • CWE-290 Authentication Bypass by Spoofing

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.