Cyber Resilience

CVE-2022-46353

Critical

Published: 13 December 2022

Published
13 December 2022
Modified
22 April 2025
KEV Added
—
Patch
—
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0199 84.0th percentile
Risk Priority 21 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-46353 is a critical-severity Use of Insufficiently Random Values (CWE-330) vulnerability in Siemens 6Gk5204-0Ba00-2Mb2 Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 16.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A vulnerability has been identified in SCALANCE X204RNA (HSR) (All versions < V3.2.7), SCALANCE X204RNA (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (HSR) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP/HSR)…

more

(All versions < V3.2.7). The webserver of affected devices calculates session ids and nonces in an insecure manner. This could allow an unauthenticated remote attacker to brute-force session ids and hijack existing sessions.

CWE(s)
CWE-330

Related Threats

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

Affected Assets

siemens
6gk5204-0ba00-2mb2 firmware
≤ 3.2.7
siemens
6gk5204-0ba00-2kb2 firmware
≤ 3.2.7
siemens
6gk5204-0bs00-2na3 firmware
≤ 3.2.7
siemens
6gk5204-0bs00-3la3 firmware
≤ 3.2.7
siemens
6gk5204-0bs00-3pa3 firmware
≤ 3.2.7

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.

SC-12 Cryptographic Key Establishment and Management
addresses: CWE-330

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

References