CVE-2022-4098

Device takeover via spoofed WBM session requests

Published Dec 13, 2022 · Updated Apr 14, 2025

Authentication bypass in Wiesemann & Theis Com-Server devices before 1.55 or 1.78 allows remote attackers to take over a device. The WBM session handler exposes a logged-in user's session ID and accepts modified HTTP GET requests when the source IP is spoofed. An attacker must share the target's subnet and wait for an authenticated WBM session; successful requests can change arbitrary settings.

CVSS severity7.1
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Wiesemann & Theis Com-Server devices before 1.55 or 1.78 allows remote attackers to take over a device. The WBM session handler exposes a logged-in user's session ID and accepts modified HTTP GET requests when the source IP is spoofed. An attacker must share the target's subnet and wait for an authenticated WBM session; successful requests can change arbitrary settings.

The record

CVE
CVE-2022-4098
Published
Dec 13, 2022
Updated
Apr 14, 2025
Vendor
Wiesemann & Theis GmbH
Product
Com-Server LC
Classifications
CWE-290, CAPEC-151, T1550.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.55

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Wiesemann & Theis GmbH · Com-Server LCversion=0 <1.55
Wiesemann & Theis GmbH · Com-Server 20mAversion=0 <1.55
Wiesemann & Theis GmbH · Com-Server Highspeed Compactversion=0 <1.78
Wiesemann & Theis GmbH · Com-Server Highspeed Isolatedversion=0 <1.78
Wiesemann & Theis GmbH · Com-Server Highspeed 100BaseLXversion=0 <1.78
Wiesemann & Theis GmbH · Com-Server Highspeed 19" 1Portversion=0 <1.78
Wiesemann & Theis GmbH · Com-Server ULversion=0 <1.55
Wiesemann & Theis GmbH · Com-Server Highspeed OEMversion=0 <1.78
Wiesemann & Theis GmbH · Com-Server PoE 3x Isolatedversion=0 <1.55
Wiesemann & Theis GmbH · Com-Server Highspeed Office 1 Portversion=0 <1.78
Wiesemann & Theis GmbH · Com-Server Highspeed PoEversion=0 <1.78
Wiesemann & Theis GmbH · Com-Server Highspeed 19" 4Portversion=0 <1.78
Wiesemann & Theis GmbH · Com-Server++version=0 <1.55
Wiesemann & Theis GmbH · Com-Server Highspeed 100BaseFXversion=0 <1.78
Wiesemann & Theis GmbH · Com-Server Highspeed Industryversion=0 <1.78
Wiesemann & Theis GmbH · Com-Server Highspeed Office 4 Portversion=0 <1.78

Published CVSS scores

7.1CERT VDECVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
8.0NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing
CAPEC-151Identity Spoofing
T1550.004Use Alternate Authentication Material: Web Session Cookie

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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