CVE-2026-5850

CRITICAL

Totolink A7100RU CGI cstecgi.cgi setVpnPassCfg os command injection

Title source: cna

Description

A vulnerability was identified in Totolink A7100RU 7.4cu.2313_b20191024. This affects the function setVpnPassCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument pptpPassThru leads to os command injection. Remote exploitation of the attack is possible. The exploit is publicly available and might be used.

References (5)

Core 5

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-356376 | Totolink A7100RU CGI cstecgi.cgi setVpnPassCfg os command injection

https://vuldb.com/vuln/356376

Signature, Permissions Required signature permissions-required

VDB-356376 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/356376/cti

Third Party Advisory third-party-advisory

Submit #791266 | Totolink A7100RU 7.4cu.2313_b20191024 Command Injection

https://vuldb.com/submit/791266

Exploit exploit

https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_156/README.md

View Exploit ZIP pw:eip

Product product

https://www.totolink.net/

Scores

CVSS v3 9.8

EPSS 0.1595

EPSS Percentile 96.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact total

Details

CWE

CWE-77 CWE-78

Status published

Products (1)

Totolink/A7100RU 7.4cu.2313_b20191024

Published Apr 09, 2026

Tracked Since Apr 09, 2026