Buffer overflow in Totolink T10
CVE-2025-5902
A vulnerability was found in TOTOLINK T10 4.1.8cu.5207 and classified as critical. This issue affects the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument slaveIpList leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.059 (93.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.050 · newest: 0.059 · change: +0.009
Affected products
- Totolink T10 — versions 4.1.8cu.5207
- Totolink T10 Firmware — versions 4.1.8cu.5207
Weakness classification (CWE)
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)
- candle-throne-f75.notion.site/TOTOLINK-T10-setUpgradeFW-20bdf0aa11858089bc28f63… (Exploit, Third Party Advisory, exploit, patch)
- www.totolink.net/ (Product, product)
Frequently asked questions
- What is CVE-2025-5902?
- CVE-2025-5902 is a high-severity vulnerability in Totolink T10, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2025-06-09.
- How severe is CVE-2025-5902?
- High severity. CVSS v3 base score is 8.8 out of 10.