Vulnerability details

CVE-2026-9454

Totolink A8000RU

Totolink A8000RU Web Management cstecgi.cgi setOpenVpnCertGenerationCfg os command injection

CVSS 4.0

9.3Critical

Official description

A flaw has been found in Totolink A8000RU 7.1cu.643_b20200521. This vulnerability affects the function setOpenVpnCertGenerationCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument servername can lead to os command injection. The attack may be launched remotely. The exploit has been published and may be used.

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/365435 vdb-entrytechnical-description
https://vuldb.com/vuln/365435/cti signaturepermissions-required
https://vuldb.com/submit/813447 third-party-advisory
https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_341/README.md exploit
https://www.totolink.net/ product

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Details

Published: 2026-05-25
Last updated: 2026-05-28
State: Published
Assigner (CNA): VulDB

Exploit prediction (EPSS)

1.9%

Probability of exploitation in 30 days

79.9%

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