CVE-2022-42785 | Wiesemann & Theis: Authentication bypass in Com-Server family

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.

Published: 2022-11-15 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-42785 is rated High Risk (66.6/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.42%). High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-42785

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-10 2.13% 1.42% -0.71%
2 2025-11-17 1.04% 2.13% +1.09%
3 2025-11-16 — 1.04% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-42785

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]

Weakness enumeration for CVE-2022-42785

Affected software / configurations for CVE-2022-42785

Vendor Product Version Raw CPE
wut at-modem-emulator_firmware < 1.48 cpe:2.3:o:wut:at-modem-emulator_firmware:*:*:*:*:*:*:*:*
wut com-server_\+\+_firmware < 1.48 cpe:2.3:o:wut:com-server_\+\+_firmware:*:*:*:*:*:*:*:*
wut com-server_20ma_firmware < 1.48 cpe:2.3:o:wut:com-server_20ma_firmware:*:*:*:*:*:*:*:*
wut com-server_highspeed_100basefx_firmware < 1.76 cpe:2.3:o:wut:com-server_highspeed_100basefx_firmware:*:*:*:*:*:*:*:*
wut com-server_highspeed_100baselx_firmware < 1.76 cpe:2.3:o:wut:com-server_highspeed_100baselx_firmware:*:*:*:*:*:*:*:*
wut com-server_highspeed_19\"_1port_firmware < 1.76 cpe:2.3:o:wut:com-server_highspeed_19\"_1port_firmware:*:*:*:*:*:*:*:*
wut com-server_highspeed_19\"_4port_firmware < 1.76 cpe:2.3:o:wut:com-server_highspeed_19\"_4port_firmware:*:*:*:*:*:*:*:*
wut com-server_highspeed_compact_firmware < 1.76 cpe:2.3:o:wut:com-server_highspeed_compact_firmware:*:*:*:*:*:*:*:*
wut com-server_highspeed_industry_firmware < 1.76 cpe:2.3:o:wut:com-server_highspeed_industry_firmware:*:*:*:*:*:*:*:*
wut com-server_highspeed_isolated_firmware < 1.76 cpe:2.3:o:wut:com-server_highspeed_isolated_firmware:*:*:*:*:*:*:*:*
wut com-server_highspeed_oem_firmware < 1.76 cpe:2.3:o:wut:com-server_highspeed_oem_firmware:*:*:*:*:*:*:*:*
wut com-server_highspeed_office_1port_firmware < 1.76 cpe:2.3:o:wut:com-server_highspeed_office_1port_firmware:*:*:*:*:*:*:*:*
wut com-server_highspeed_office_4port_firmware < 1.76 cpe:2.3:o:wut:com-server_highspeed_office_4port_firmware:*:*:*:*:*:*:*:*
wut com-server_highspeed_poe_firmware < 1.76 cpe:2.3:o:wut:com-server_highspeed_poe_firmware:*:*:*:*:*:*:*:*
wut com-server_highspeed_lc_firmware < 1.48 cpe:2.3:o:wut:com-server_highspeed_lc_firmware:*:*:*:*:*:*:*:*
wut com-server_highspeed_ul_firmware < 1.48 cpe:2.3:o:wut:com-server_highspeed_ul_firmware:*:*:*:*:*:*:*:*
wut com-server_highspeed_poe_3x_isolated_firmware < 1.48 cpe:2.3:o:wut:com-server_highspeed_poe_3x_isolated_firmware:*:*:*:*:*:*:*:*

References for CVE-2022-42785

URL Tags
https://cert.vde.com/de/advisories/VDE-2022-043/ Third Party Advisory
cvelogic Threat Intelligence