CVE intelligence and bounded remediation

CVE-2022-4098 — Multiple Wiesemann&Theis products of the ComServer Series are prone to an authentication bypass through IP spoofing

High CVSS 8

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.

Severity
High
CVSS
8 (3.1)
Published
2022-12-13
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-290

Affected products

  • wut / com-server_++_firmware
  • wut / com-server_20ma_firmware
  • wut / com-server_highspeed_100basefx_firmware
  • wut / com-server_highspeed_100baselx_firmware
  • wut / com-server_highspeed_19"_1port_firmware
  • wut / com-server_highspeed_19"_4port_firmware

Showing 6 representative product identities from 16 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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