Vulnerability · Published Jan 19, 2026 · Assigned by VulDB
CVE-2026-1157Totolink LR350 cstecgi.cgi setWiFiEasyCfg buffer overflow
High 8.8
In plain English
A high-severity buffer overflow in LR350 from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)1.0%top 36.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was identified in Totolink LR350 9.3.5u.6369_B20220309. This affects the function setWiFiEasyCfg of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument ssid leads to buffer overflow. It is possible to launch the attack remotely. The exploit is publicly available and might be used.
Affected products (as reported)
Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-341751 | Totolink LR350 cstecgi.cgi setWiFiEasyCfg buffer overflow vdb-entry, technical-description
- VDB-341751 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #735726 | TOTOLINK LR350 LR350 V9.3.5u.6369_B20220309 Buffer Overflow third-party-advisory
- https://lavender-bicycle-a5a.notion.site/TOTOLINK-LR350-setWiFiEasyCfg-2e453a41781f80b7b53cef33c6a782aa?source=copy_link exploit
- https://www.totolink.net/ product