Buffer overflow in Totolink Lr350
CVE-2026-1155
A vulnerability was found in Totolink LR350 9.3.5u.6369_B20220309. Affected by this vulnerability is the function setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ssid results in buffer overflow. The attack may be performed from remote. The exploit has been made public and could 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: 0.009 (58.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.009 · change: +0.001
Affected products
- Totolink Lr350 — versions 9.3.5u.6369_B20220309
- Totolink Lr350 Firmware — versions 9.3.5u.6369_b20220309
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)
- lavender-bicycle-a5a.notion.site/TOTOLINK-LR350-setWiFiEasyGuestCfg-2e453a41781… (Exploit, Third Party Advisory, exploit)
- www.totolink.net/ (Product, product)
Frequently asked questions
- What is CVE-2026-1155?
- CVE-2026-1155 is a high-severity vulnerability in Totolink Lr350, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-01-19.
- How severe is CVE-2026-1155?
- High severity. CVSS v3 base score is 8.8 out of 10.