CVE-2022-42785Network attack vector

Unauthenticated login via crafted HTTP GET

Published Nov 10, 2022 · Updated May 1, 2025

Authentication bypass in Wiesemann & Theis Com-Server firmware before 1.48 or 1.76 allows remote attackers to log in via a crafted HTTP GET request. The web interface accepts the modified request as an authenticated login without verifying the configured password; lower-level implementation details are undisclosed. No credentials or user interaction are required, and successful exploitation grants the account-level control available through the device web interface.

CVSS severity9.8
Critical
EPSS probability1.07%
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 firmware before 1.48 or 1.76 allows remote attackers to log in via a crafted HTTP GET request. The web interface accepts the modified request as an authenticated login without verifying the configured password; lower-level implementation details are undisclosed. No credentials or user interaction are required, and successful exploitation grants the account-level control available through the device web interface.

The record

CVE
CVE-2022-42785
Published
Nov 10, 2022
Updated
May 1, 2025
Vendor
Wiesemann & Theis GmbH
Product
Com-Server LC
Classifications
CWE-306, CAPEC-1, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 10, 2022CVE publishedPublication date reported by the CVE source.
  2. May 1, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=1.0 <1.48

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wiesemann & Theis GmbH · Com-Server LCversion=1.0 <1.48
Wiesemann & Theis GmbH · Com-Server 20mAversion=1.0 <1.48
Wiesemann & Theis GmbH · Com-Server Highspeed Compactversion=1.0 <1.76
Wiesemann & Theis GmbH · Com-Server Highspeed Isolatedversion=1.0 <1.76
Wiesemann & Theis GmbH · Com-Server Highspeed 100BaseLXversion=1.0 <1.76
Wiesemann & Theis GmbH · AT-Modem-Emulatorversion=1.0 <1.48
Wiesemann & Theis GmbH · Com-Server Highspeed 19" 1Portversion=1.0 <1.76
Wiesemann & Theis GmbH · Com-Server ULversion=1.0 <1.48
Wiesemann & Theis GmbH · Com-Server Highspeed OEMversion=1.0 <1.76
Wiesemann & Theis GmbH · Com-Server PoE 3x Isolatedversion=1.0 <1.48
Wiesemann & Theis GmbH · Com-Server Highspeed Office 1 Portversion=1.0 <1.76
Wiesemann & Theis GmbH · Com-Server Highspeed PoEversion=1.0 <1.76
Wiesemann & Theis GmbH · Com-Server Highspeed 19" 4Portversion=1.0 <1.76
Wiesemann & Theis GmbH · Com-Server++version=1.0 <1.48
Wiesemann & Theis GmbH · Com-Server Highspeed 100BaseFXversion=1.0 <1.76
Wiesemann & Theis GmbH · Com-Server Highspeed Industryversion=1.0 <1.76
Wiesemann & Theis GmbH · Com-Server Highspeed Office 4 Portversion=1.0 <1.76

Published CVSS scores

9.8CERT@VDECVSS:3.1/AV:N/AC:L/PR:N/UI:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
CAPEC-1Accessing Functionality Not Properly Constrained by ACLs
T1190Exploit Public-Facing Application

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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