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    CVE-2026-4437 Reverse DNS Risk: Patch & Verify gethostbyaddr on Windows

    Microsoft’s March 2026 security guidance includes CVE-2026-4437, a flaw described as a case where gethostbyaddr and gethostbyaddr_r may incorrectly handle a DNS response. The wording is brief, but it signals a bug in a long-standing reverse-lookup path that many applications still depend on for...
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    • cve 2026 dns reverse lookup patch management windows security
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