CVE-2026-24290

CVE-2026-24290 is a high-severity vulnerability in Microsoft Windows 10 1809 with a CVSS 3.x base score of 7.8. 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-284.

Key facts

• Severity: High (CVSS 3.x base score 7.8)
• EPSS exploit prediction: 0% (25th percentile)
• Actively exploited: Not listed in CISA KEV
• EU (EUVD) id: EUVD-2026-10612
• Weakness: CWE-284
• Affected product: Microsoft Windows 10 1809
• Published: 2026-03-10
• Last modified: 2026-06-17

Description

Improper access control in Windows Projected File System allows an authorized attacker to elevate privileges locally.

Frequently asked questions

What is CVE-2026-24290?

Improper access control in Windows Projected File System allows an authorized attacker to elevate privileges locally.

How severe is CVE-2026-24290?

CVE-2026-24290 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-24290 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-24290?

CVE-2026-24290 primarily affects Microsoft Windows 10 1809. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-24290?

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-2026-24290 have an EU (EUVD) identifier?

Yes. CVE-2026-24290 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10612.

When was CVE-2026-24290 published?

CVE-2026-24290 was published on 2026-03-10 and last updated on 2026-06-17.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24290

Affected products (20)

• cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
• cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*
• cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*
• cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*

More vulnerabilities in Microsoft Windows 10 1809

• 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-2026-44815 — Critical (CVSS 9.8): Stack-based buffer overflow in Windows DHCP Client allows an unauthorized attacker to execute code over a network.
• CVE-2026-33824 — Critical (CVSS 9.8): Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
• CVE-2025-60724 — Critical (CVSS 9.8): Heap-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a…
• CVE-2025-53766 — Critical (CVSS 9.8): Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network.

All CVEs affecting Microsoft Windows 10 1809 →

Other CWE-284 (Improper Access Control) vulnerabilities

• CVE-2026-50746 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi…
• CVE-2026-46978 — Critical (CVSS 10.0): Vulnerability in the Oracle Solaris product of Oracle Systems (component: Remote Administration Daemon). The…
• CVE-2026-35308 — Critical (CVSS 10.0): Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Centralized Third Party Jars).…
• CVE-2026-35307 — Critical (CVSS 10.0): Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core). Supported versions that…
• CVE-2026-46695 — Critical (CVSS 10.0): Boxlite is a sandbox service that allows users to create lightweight virtual machines (Boxes) and launch OCI containers…
• CVE-2026-46840 — Critical (CVSS 10.0): Vulnerability in Oracle REST Data Services (component: Backend-as-a-Service). Supported versions that are affected are…

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