CVE-2026-36958

Denial of Service via HTTP Flood on U‑SPEED N300 Router

Published Apr 30, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
A denial-of-service vulnerability exists in the U-SPEED N300 V1.0.0 wireless router. By sending a large number of concurrent HTTP requests to random or non-existent endpoints on the web management interface, an attacker can exhaust system resources in the embedded Boa HTTP server. This causes the router web interface to become unresponsive and may require manual reboot to restore normal operation.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared U-speed n300
U-speed n300 Firmware
CPEs cpe:2.3:h:u-speed:n300:-:*:*:*:*:*:*:*
cpe:2.3:o:u-speed:n300_firmware:1.0.0:*:*:*:*:*:*:*
Vendors & Products U-speed n300
U-speed n300 Firmware
Type Values Removed Values Added
Title Denial of Service via HTTP Flood on U‑SPEED N300 Router
Type Values Removed Values Added
First Time appeared U-speed
U-speed n300 Router
Vendors & Products U-speed
U-speed n300 Router
Type Values Removed Values Added
Weaknesses CWE-400
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A denial-of-service vulnerability exists in the U-SPEED N300 V1.0.0 wireless router. By sending a large number of concurrent HTTP requests to random or non-existent endpoints on the web management interface, an attacker can exhaust system resources in the embedded Boa HTTP server. This causes the router web interface to become unresponsive and may require manual reboot to restore normal operation.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Jul 5, 2026, 1:32 AM
Reserved
Apr 6, 2026, 12:00 AM
Status
Modified
Published
Apr 30, 2026, 3:16 PM
Modified
Nov 8, 2026, 4:10 PM