CVE-2026-5691

HIGH

Totolink A7100RU cstecgi.cgi setFirewallType os command injection

Title source: cna

Description

A vulnerability has been found in Totolink A7100RU 7.4cu.2313_b20191024. This affects the function setFirewallType of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument firewallType leads to os command injection. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used.

References (5)

Core 5

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-355518 | Totolink A7100RU cstecgi.cgi setFirewallType os command injection

https://vuldb.com/vuln/355518

Signature, Permissions Required signature permissions-required

VDB-355518 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/355518/cti

Third Party Advisory third-party-advisory

Submit #792962 | Totolink A7100RU 7.4cu.2313_b20191024 Command Injection

https://vuldb.com/submit/792962

Exploit exploit

https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_189/README.md

View Exploit ZIP pw:eip

Product product

https://www.totolink.net/

Scores

CVSS v3 7.3

EPSS 0.0117

EPSS Percentile 63.2%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-77 CWE-78

Status published

Products (1)

Totolink/A7100RU 7.4cu.2313_b20191024

Published Apr 06, 2026

Tracked Since Apr 07, 2026