Multiple CVEs Identified in IPv6 Implementation by Microsoft
First seen 18 Feb 2026, 15:24 UTC
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Microsoft has published information on two critical vulnerabilities in the IPv6 implementation. CVE-2025-40158 and CVE-2025-40135, both published on November 12, 2025, involve the use of RCU in the ip6_output() and ip6_xmit() functions, respectively. Affected systems may be at risk due to these vulnerabilities.
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Timeline
2025-11-12
CVE-2025-40158 and CVE-2025-40135 published
2026-02-18
Articles published detailing the vulnerabilities