Secuno
ENNL
Book demo

CVE-2026-36958

U-speed N300 Firmware denial of service

7.5 HIGHPublic exploitEPSS 0.49%
  1. Published30 Apr 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

U-speed N300 Firmware1.0.0

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-904418.1
A missing authorization vulnerability in the wgagent management daemon's session…
CVE-2026-866088.2
The WP Recipe Maker WordPress plugin before 10.8.2 does not have any authorisation…
CVE-2026-143218.2
The divi-dash WordPress plugin before 1.0.7 does not validate the source of the client…
CVE-2026-336258.8
LMDeploy is a toolkit for compressing, deploying, and serving large language models.…
CVE-2026-834658.2
Vulnerability in the Oracle Mobile Application Server product of Oracle E-Business…
CVE-2026-834578.1
Vulnerability in the Oracle Demand Signal Repository product of Oracle E-Business Suite…

Frequently asked

Is CVE-2026-36958 being actively exploited?

CVE-2026-36958 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.49%.

How severe is CVE-2026-36958?

CVE-2026-36958 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.49% probability of exploitation.

Which products are affected by CVE-2026-36958?

Affected products include U-speed N300 Firmware.

How do I fix CVE-2026-36958?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-36958 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.