TI-2026-00886 Aliases CVE-2026-1158 GHSA-27xh-5cf4-q5gc

Totolink LR350 POST Request cstecgi.cgi setWizardCfg buffer overflow

HIGH 73CWE-119Published 2026-01-19 · Updated 2026-02-23

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00736 54th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
TOTOLINK	LR350	9.3.5u.6369_B20220309	—	No fix listed	CNA

LR350 VendorTOTOLINK Affected 9.3.5u.6369_B20220309 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:totolink:lr350_firmware:9.3.5u.6369_b20220309:::::::*	9.3.5u.6369_b20220309	Vulnerable	TOTOLINK
cpe:2.3:h:totolink:lr350:-:::::::*	not specified by NVD	Running on	TOTOLINK

cpe:2.3:o:totolink:lr350_firmware:9.3.5u.6369_b20220309:*:*:*:*:*:*:* Versions 9.3.5u.6369_b20220309 Vulnerable ·TOTOLINK
cpe:2.3:h:totolink:lr350:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-1158
2026-10-03 Alias added: GHSA-27xh-5cf4-q5gc

References

Exploit 1

https://lavender-bicycle-a5a.notion.site/TOTOLINK-LR350-setWizardCfg-2e453a41781f80ce89cfc1d25049e279?source=copy_link

Other 1

https://www.totolink.net/

TI-2024-28696 Incorrect access control in TOTOLINK LR350 V9.3.5u.6369_B20220309 allows attackers to… CVSS 3.1CRITICAL 9.8
TI-2024-23410 TOTOLINK LR350 V9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the… CVSS 3.1CRITICAL 9.8
TI-2023-18806 TOTOLINK LR350 V9.3.5u.6369_B20220309 was discovered to contain a command injection… CVSS 3.1CRITICAL 9.8
TI-2023-18805 TOTOLINK LR350 V9.3.5u.6369_B20220309 was discovered to contain a command injection… CVSS 3.1CRITICAL 9.8
TI-2023-18804 TOTOLINK LR350 V9.3.5u.6369_B20220309 was discovered to contain a command injection… CVSS 3.1CRITICAL 9.8
TI-2023-18803 TOTOLINK LR350 V9.3.5u.6369_B20220309 was discovered to contain a command injection… CVSS 3.1CRITICAL 9.8

See all 35 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences