Critical severity9.1NVD Advisory· Published Feb 10, 2023· Updated Jun 17, 2026
CVE-2022-43501
CVE-2022-43501
Description
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 or spoof future ones.
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Affected products
3- Range: prior to Ver6.0.1.34
Patches
Vulnerability mechanics
References
2- jvn.jp/en/vu/JVNVU99551468/nvdThird Party Advisory
- www.elwsc.co.jp/news/6352nvdVendor Advisory
News mentions
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