cve 2026 21249

  1. CVE-2026-21249: Windows NTLM Spoofing Urgency and Defender Steps

    Microsoft’s advisory listing for CVE-2026-21249 confirms a new Windows NTLM spoofing vulnerability that has elevated operational urgency across enterprise environments: the vendor has assigned the identifier and published a terse entry in its Security Update Guide, but technical specifics and KB...
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    • cve 2026 21249 ntlm spoofing patch management windows security
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