Vulnerability in U-speed N300
CVE-2026-36959
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…
EPSS: 0.001 (23.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- U-speed N300
- U-speed N300_firmware — versions 1.0.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Broken Link)
- cve@mitre.org (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-36959?
- CVE-2026-36959 is a high-severity vulnerability in U-speed N300, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 7.5/10. Published 2026-04-30.
- How severe is CVE-2026-36959?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2026-36959 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.