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 can be initiated remotely. The exploit has been disclosed to the public and may be used.
Vulnerability class: Broken Authentication
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.094 (95.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.090 · newest: 0.094 · change: +0.004
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
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/aLtEr6/MY_test/blob/main/TOTOLINK/TOTOLINK T10 Vulnerability.md (exploit, Broken Link)
- www.totolink.net/ (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.