Vulnerability · Published Jan 19, 2026 · Assigned by VulDB

CVE-2026-1158Totolink LR350 POST Request cstecgi.cgi setWizardCfg 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 0.7% (higher than 55% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.7%top 45.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A security flaw has been discovered in Totolink LR350 9.3.5u.6369_B20220309. This vulnerability affects the function setWizardCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Performing a manipulation of the argument ssid results in buffer overflow. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.

Affected products (as reported)

Vendor	Product	Versions
Totolink	LR350	9.3.5u.6369_B20220309

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-341752 | Totolink LR350 POST Request cstecgi.cgi setWizardCfg buffer overflow vdb-entry, technical-description
VDB-341752 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #735728 | TOTOLINK LR350 LR350 V9.3.5u.6369_B20220309 Buffer Overflow third-party-advisory
https://lavender-bicycle-a5a.notion.site/TOTOLINK-LR350-setWizardCfg-2e453a41781f80ce89cfc1d25049e279?source=copy_link exploit
https://www.totolink.net/ product