Vulnerability details

CVE-2026-7136

Totolink A8000RU

Totolink A8000RU CGI cstecgi.cgi setDmzCfg os command injection

CVSS 4.0

9.3Critical

Official description

A weakness has been identified in Totolink A8000RU 7.1cu.643_b20200521. Affected by this issue is the function setDmzCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Executing a manipulation of the argument wanIdx can lead to os command injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.

CVSS scores

Score	Version	Source	Vector
9.3Critical	4.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`
9.8Critical	3.1	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
9.8Critical	3.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
10.0High	2.0	CVEProject cvelistV5 (CNA) (VulDB)	`AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR`

Affected products

Vendor	Product	Versions	Source
Totolink	A8000RU	7.1cu.643_b20200521	CVEProject cvelistV5 (CNA)

References and advisories

https://vuldb.com/vuln/359735 vdb-entrytechnical-description
https://vuldb.com/vuln/359735/cti signaturepermissions-required
https://vuldb.com/submit/801007 third-party-advisory
https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_311/README.md exploit
https://www.totolink.net/ product

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Details

Published: 2026-04-27
Last updated: 2026-04-27
State: Published
Assigner (CNA): VulDB

Exploit prediction (EPSS)

1.76%

Probability of exploitation in 30 days

78.2%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-78
OS Command Injection
CWE-77
Command Injection