Cyber Resilience

CVE-2022-43501

Critical

Published: 10 February 2023

Published
10 February 2023
Modified
24 March 2025
KEV Added
—
Patch
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CVSS Score v3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS Score 0.0032 55.7th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-43501 is a critical-severity Use of Insufficiently Random Values (CWE-330) vulnerability in Elwsc Kasago Ipv4. Its CVSS base score is 9.1 (Critical).

Operationally, ranked in the top 44.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

KASAGO TCP/IP stack provided by Zuken Elmic generates ISNs(Initial Sequence Number) for TCP connections from an insufficiently random source. An attacker may be able to determine the ISN of the current or future TCP connections and either hijack existing ones…

more

or spoof future ones.

CWE(s)
CWE-330

Related Threats

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

Affected Assets

elwsc
kasago ipv4
≤ 6.0.1.34
elwsc
kasago ipv4 light
≤ 6.0.1.34
elwsc
kasago ipv6\/v4 dual
≤ 6.0.1.34
elwsc
kasago mobile ipv6
≤ 6.0.1.34

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