Privilege escalation in Totolink A3700r
CVE-2025-3663
A vulnerability, which was classified as critical, has been found in TOTOLINK A3700R 9.1.2u.5822_B20200513. This issue affects the function setWiFiEasyCfg/setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi of the component Password Handler. The manipulation leads to improper access controls. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.113 (95.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.103 · newest: 0.113 · change: +0.010
Affected products
- Totolink A3700r — versions 9.1.2u.5822_B20200513
- Totolink A3700r Firmware — versions 9.1.2u.5822_b20200513
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- lavender-bicycle-a5a.notion.site/TOTOLINK-A3700R-setWiFiEasyCfg-1cb53a41781f809… (Exploit, Third Party Advisory, exploit)
- www.totolink.net/ (Product, product)
Frequently asked questions
- What is CVE-2025-3663?
- CVE-2025-3663 is a medium-severity vulnerability in Totolink A3700r, classified under Incorrect Privilege Assignment. CVSS score: 5.3/10. Published 2025-04-16.
- How severe is CVE-2025-3663?
- Medium severity. CVSS v3 base score is 5.3 out of 10.