Cyber Resilience

CVE-2022-42787

High

Published: 10 November 2022

Published
10 November 2022
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0091 76.3th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-42787 is a high-severity Use of Insufficiently Random Values (CWE-330) vulnerability in Wut At-Modem-Emulator Firmware. Its CVSS base score is 8.8 (High).

Operationally, ranked in the top 23.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Multiple W&T products of the Comserver Series use a small number space for allocating sessions ids. After login of an user an unathenticated remote attacker can brute force the users session id and get access to his account on the…

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the device. As the user needs to log in for the attack to be successful a user interaction is required.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

wut
at-modem-emulator firmware
≤ 1.48
wut
com-server \+\+ firmware
≤ 1.48
wut
com-server 20ma firmware
≤ 1.48
wut
com-server highspeed 100basefx firmware
≤ 1.76
wut
com-server highspeed 100baselx firmware
≤ 1.76
wut
com-server highspeed 19\" 1port firmware
≤ 1.76
wut
com-server highspeed 19\" 4port firmware
≤ 1.76
wut
com-server highspeed compact firmware
≤ 1.76
wut
com-server highspeed industry firmware
≤ 1.76
wut
com-server highspeed isolated firmware
≤ 1.76
+7 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-330

Key generation under controlled management uses approved random-bit sources rather than insufficiently random values.

References