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TI-2026-27976 Aliases CVE-2026-36959GHSA-vhpj-7mf7-qx3c

U-SPEED N300 router V1.0.0 does not implement rate limiting or account lockout…

Priority HIGH 72CWE-307Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-307.

Summary

U-SPEED N300 router V1.0.0 does not implement rate limiting or account lockout protections on the /api/login endpoint. This allows an attacker on the local network to perform unlimited authentication attempts, enabling brute-force attacks against the administrator account and potential unauthorized access to the router management interface.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00349 28th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:u-speed:n300_firmware:1.0.0:*:*:*:*:*:*:*1.0.0VulnerableU-speed
cpe:2.3:h:u-speed:n300:-:*:*:*:*:*:*:*not specified by NVDRunning onU-speed
  • cpe:2.3:o:u-speed:n300_firmware:1.0.0:*:*:*:*:*:*:* Versions 1.0.0 Vulnerable ·U-speed
  • cpe:2.3:h:u-speed:n300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·U-speed

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-36959
  2. 2026-10-03 Alias added: GHSA-vhpj-7mf7-qx3c

References

Exploit 1

  • TI-2026-27975 A denial-of-service vulnerability exists in the U-SPEED N300 V1.0.0 wireless router. CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences