Privilege escalation in Totolink A3700r
CVE-2025-3675
A vulnerability was found in TOTOLINK A3700R 9.1.2u.5822_B20200513. It has been rated as critical. Affected by this issue is the function setL2tpServerCfg of the file /cgi-bin/cstecgi.cgi. The manipulation leads to improper access controls. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.
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: 0.006 (47.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.001
Affected products
- Totolink A3700r — versions 9.1.2u.5822_B20200513
- Totolink A3700r Firmware — versions 9.1.2u.5822_b20200513
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)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- lavender-bicycle-a5a.notion.site/TOTOLINK-A3700R-setL2tpServerCfg-1cb53a41781f8… (Exploit, Third Party Advisory, exploit)
- www.totolink.net/ (Product, product)
Frequently asked questions
- What is CVE-2025-3675?
- CVE-2025-3675 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-2025-3675?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2025-3675 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.