CVE-2026-5105

Totolink A3300R Parameter cstecgi.cgi setVpnPassCfg command injection

State: Published
Severity: 5.3 Medium
Published: Mar 30, 2026
Updated: Mar 30, 2026
Reserved: Mar 29, 2026

Description

A vulnerability was detected in Totolink A3300R 17.0.0cu.557_b20221024. The affected element is the function setVpnPassCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. Performing a manipulation of the argument pptpPassThru results in command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	6.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R	VulDB
3.0	6.3 Medium	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R	VulDB
2.0	6.5 Medium	AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR	VulDB

Weaknesses

CWE-77 Command Injection
CWE-74 Injection

Affected Products

Product	Versions
A3300RTotolink	17.0.0cu.557_b20221024Affected

References

VDB-354130 | Totolink A3300R Parameter cstecgi.cgi setVpnPassCfg command injectionvdb-entrytechnical-description
VDB-354130 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
Submit #779143 | Totolink A3300R 17.0.0cu.557_b20221024 Command Injectionthird-party-advisory
https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_pptpPassThru_cmd_injectexploit
https://www.totolink.net/product

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