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CVE-2026-41089

Microsoft Windows Server 2012CRITICAL · CVSS 9.8No exploitation reported

What is CVE-2026-41089?

Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a network.

CVSS9.8 NVD 3.1
SeverityCRITICAL
ExploitationNo exploitation reported
EPSS<1% · P26
Triage statusNo Known Exploit
ActionPatch within 48 hours
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWECWE-121
NVD published2026-05-12
NVD last modified2026-05-15

Affected product

Microsoft Windows Server 2012

NVD also lists CPE entries for: Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2022 23h2

Remediation Steps

  1. Apply the vendor security update for Microsoft Windows Server 2012 as a priority.
  2. Restrict network exposure of the affected service to trusted sources until patched.
  3. Review logs and detections for indicators of exploitation.
  4. Confirm fixed versions against the official vendor advisory before deploying.
🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.

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