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CVE-2026-47291

Severity
CRITICAL
CVSS
9.8
EPSS
0.2275
Risk score
47.16
CISA KEV
No
PoC
No
Published
2026-06-09
Modified
2026-07-28
First seen
2026-08-05
Aliases
EUVD-2026-35501, GHSA-392Q-PC37-M552
Products
Microsoft:Windows 10 Version 1607 10.0.14393.0 <10.0.14393.9234, Microsoft:Windows 10 Version 1809 10.0.17763.0 <10.0.17763.8880, Microsoft:Windows 10 Version 21H2 10.0.19044.0 <10.0.19044.7417, Microsoft:Windows 10 Version 22H2 10.0.19045.0 <10.0.19045.7417, Microsoft:Windows 11 Version 23H2 10.0.22631.0 <10.0.22631.7219, Microsoft:Windows 11 Version 24H2 10.0.26100.0 <10.0.26100.8655, Microsoft:Windows 11 Version 25H2 10.0.26200.0 <10.0.26200.8655, Microsoft:Windows 11 version 26H1 10.0.28000.0 <10.0.28000.2269, Microsoft:Windows Server 2012 (Server Core installation) 6.2.9200.0 <6.2.9200.26132, Microsoft:Windows Server 2012 6.2.9200.0 <6.2.9200.26132, Microsoft:Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 <6.3.9600.23228, Microsoft:Windows Server 2012 R2 6.3.9600.0 <6.3.9600.23228, Microsoft:Windows Server 2016 (Server Core installation) 10.0.14393.0 <10.0.14393.9234, Microsoft:Windows Server 2016 10.0.14393.0 <10.0.14393.9234, Microsoft:Windows Server 2019 (Server Core installation) 10.0.17763.0 <10.0.17763.8880, Microsoft:Windows Server 2019 10.0.17763.0 <10.0.17763.8880, Microsoft:Windows Server 2022 10.0.20348.0 <10.0.20348.5256, Microsoft:Windows Server 2025 (Server Core installation) 10.0.26100.0 <10.0.26100.32995, Microsoft:Windows Server 2025 10.0.26100.0 <10.0.26100.32995, microsoft:windows_10_1607, microsoft:windows_10_1809, microsoft:windows_10_21h2, microsoft:windows_10_22h2, microsoft:windows_11_23h2, microsoft:windows_11_24h2, microsoft:windows_11_25h2, microsoft:windows_11_26h1, microsoft:windows_server_2012, microsoft:windows_server_2016, microsoft:windows_server_2019, microsoft:windows_server_2022, microsoft:windows_server_2025
Sources
nvd CVE-2026-47291
euvd EUVD-2026-35501

Description

Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network.

References