CVE-2026-49160CWE-400

HTTP.sys Denial of Service Vulnerability

High · published June 9, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
70.5
In the wild
Unconfirmed
What it is

Uncontrolled resource consumption in HTTP/2 allows an unauthorized attacker to deny service over a network.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
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
CVSS v4.0
Not supplied
EPSS
0.01314 · 70.5th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-06-09T17:05Z
EPSS history
Timeline
  • 25 SEP 03:26Z
    EPSS moved 54% → 1%
    epss
  • 09 JUN 17:05Z
    HTTP.sys Denial of Service Vulnerability
    cvelistv5