CVE-2024-43447
CVE-2024-43447 is a high-severity vulnerability in Microsoft Windows Server 2022 with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-415.
Key facts
- Severity: High (CVSS 3.x base score 8.1)
- EPSS exploit prediction: 1% (70th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-40717
- Weakness: CWE-415
- Affected product: Microsoft Windows Server 2022
- Published:
- Last modified:
Description
Windows SMBv3 Server Remote Code Execution Vulnerability
Frequently asked questions
- What is CVE-2024-43447?
- Windows SMBv3 Server Remote Code Execution Vulnerability
- How severe is CVE-2024-43447?
- CVE-2024-43447 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2024-43447 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-43447?
- CVE-2024-43447 affects Microsoft Windows Server 2022. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2024-43447?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2024-43447 have an EU (EUVD) identifier?
- Yes. CVE-2024-43447 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-40717.
- When was CVE-2024-43447 published?
- CVE-2024-43447 was published on 2024-11-12 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
More vulnerabilities in Microsoft Windows Server 2022
- CVE-2025-49708 — Critical (CVSS 9.9): Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges over a network.
- CVE-2026-47291 — Critical (CVSS 9.8): Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network.
- CVE-2026-45657 — Critical (CVSS 9.8): Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.
- CVE-2026-44815 — Critical (CVSS 9.8): Stack-based buffer overflow in Windows DHCP Client allows an unauthorized attacker to execute code over a network.
- CVE-2026-41089 — Critical (CVSS 9.8): Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a network.
- CVE-2026-33824 — Critical (CVSS 9.8): Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
All CVEs affecting Microsoft Windows Server 2022 →
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