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CVE-2026-7244— Totolink A8000RU CGI cstecgi.cgi setWiFiEasyGuestCfg os command injection

Quick assessment

Affected
Totolink A8000RU
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TOTOLINK A8000RU是中国吉翁电子（TOTOLINK）公司的一款无线路由器。 Totolink A8000RU 7.1cu.643_b20200521版本存在命令注入漏洞，该漏洞源于CGI Handler组件中/cgi-bin/cstecgi.cgi文件的setWiFiEasyGuestCfg函数对参数merge的操作，可能导致OS命令注入。

CVSS 9.8 · Critical EPSS 3.25% · P88
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I. Basic Information for CVE-2026-7244

Vulnerability Information
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Vulnerability Title
Totolink A8000RU CGI cstecgi.cgi setWiFiEasyGuestCfg os command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. The impacted element is the function setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument merge results in os command injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
TOTOLINK A8000RU 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK A8000RU是中国吉翁电子（TOTOLINK）公司的一款无线路由器。 Totolink A8000RU 7.1cu.643_b20200521版本存在命令注入漏洞，该漏洞源于CGI Handler组件中/cgi-bin/cstecgi.cgi文件的setWiFiEasyGuestCfg函数对参数merge的操作，可能导致OS命令注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Totolink A8000RU 7.1cu.643_b20200521 cpe:2.3:o:totolink:a8000ru_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-7244

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III. Intelligence Information for CVE-2026-7244

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Other References for CVE-2026-7244 (1)

Same Patch Batch · Totolink · 2026-04-28 · 9 CVEs total

CVE-2026-7203 9.8 CRITICAL Totolink A8000RU CGI cstecgi.cgi setUrlFilterRules os command injection
CVE-2026-7204 9.8 CRITICAL Totolink A8000RU CGI cstecgi.cgi setPptpServerCfg os command injection
CVE-2026-7240 9.8 CRITICAL Totolink A8000RU CGI cstecgi.cgi setVpnAccountCfg os command injection
CVE-2026-7241 9.8 CRITICAL Totolink A8000RU CGI cstecgi.cgi setWiFiBasicCfg os command injection
CVE-2026-7242 9.8 CRITICAL Totolink A8000RU CGI cstecgi.cgi setOpenVpnClientCfg os command injection
CVE-2026-7243 9.8 CRITICAL Totolink A8000RU CGI cstecgi.cgi setRadvdCfg os command injection
CVE-2026-7218 7.2 HIGH Totolink N300RT libapmib.so formWsc is_cmd_string_valid buffer overflow
CVE-2026-7219 7.2 HIGH Totolink N300RT formIpQoS buffer overflow

IV. Related Vulnerabilities

Same product: A8000RU
Same vendor: Totolink
Same weakness: CWE-78

V. Comments for CVE-2026-7244

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