CVE-2025-27473

Uncontrolled resource consumption in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.

Scoring

Severity

HIGH

CVSS base score

7.5

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

EPSS probability

2.19%

CWE

CWE-400

Published

2025-04-08

Last modified

2026-08-10

Affected products

• Microsoft Windows 10 Version 1507
• Microsoft Windows 10 Version 1607
• Microsoft Windows 10 Version 1809
• Microsoft Windows 10 Version 21H2
• Microsoft Windows 10 Version 22H2
• Microsoft Windows 11 version 22H2
• Microsoft Windows 11 version 22H3
• Microsoft Windows 11 Version 23H2

Weakness type

• CWE-400

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