Auth bypass in Totolink T10
CVE-2025-9533
A vulnerability has been found in TOTOLINK T10 4.1.8cu.5241_B20210927. Affected is an unknown function of the file /formLoginAuth.htm. The manipulation of the argument authCode with the input 1 leads to improper authentication. The attack…
Vulnerability class: Broken Authentication
EPSS: 0.003 (54.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Totolink T10 — versions 4.1.8cu.5241_B20210927
- Totolink T10_firmware — versions 4.1.8cu.5241_b20210927
Weakness classification (CWE)
Public proof-of-concept exploits
References
- VDB-321552 | TOTOLINK T10 formLoginAuth.htm improper authentication (technical-description, Third Party Advisory, VDB Entry, vdb-entry)
- VDB-321552 | CTI Indicators (IOB, IOC, IOA) (signature, Permissions Required, permissions-required, VDB Entry)
- Submit #635941 | TOTOLINK T10 T10_V4.1.8cu.5241_B20210927 Missing Authentication (Third Party Advisory, VDB Entry, third-party-advisory)
- cna@vuldb.com (exploit, Broken Link)
- cna@vuldb.com (Product, product)
Frequently asked questions
- What is CVE-2025-9533?
- CVE-2025-9533 is a high-severity vulnerability in Totolink T10, classified under Improper Authentication. CVSS score: 7.3/10. Published 2025-08-27.
- How severe is CVE-2025-9533?
- High severity. CVSS v3 base score is 7.3 out of 10.
- Is CVE-2025-9533 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.