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CVE-2026-6158— Totolink N300RH upgrade.so setUpgradeUboot os command injection

Quick assessment

Affected
Totolink N300RH
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 N300RH是中国吉翁电子（TOTOLINK）公司的一款长距离无线路由器。 Totolink N300RH 6.1c.1353_B20190305版本存在操作系统命令注入漏洞，该漏洞源于对文件upgrade.so中参数FileName的错误操作，可能导致os命令注入。

CVSS 7.3 · High EPSS 2.06% · P81

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-6158

Vulnerability Information
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Vulnerability Title
Totolink N300RH upgrade.so setUpgradeUboot os command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in Totolink N300RH 6.1c.1353_B20190305. Affected is the function setUpgradeUboot of the file upgrade.so. This manipulation of the argument FileName causes os command injection. The attack is possible to be carried out remotely. The exploit has been published and may be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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 N300RH 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK N300RH是中国吉翁电子（TOTOLINK）公司的一款长距离无线路由器。 Totolink N300RH 6.1c.1353_B20190305版本存在操作系统命令注入漏洞，该漏洞源于对文件upgrade.so中参数FileName的错误操作，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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Totolink N300RH 6.1c.1353_B20190305 cpe:2.3:o:totolink:n300rh_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-6158

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III. Intelligence Information for CVE-2026-6158

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Proof of Concept for CVE-2026-6158 (1)

Same Patch Batch · Totolink · 2026-04-13 · 11 CVEs total

CVE-2026-6195 9.8 CRITICAL Totolink A7100RU CGI cstecgi.cgi setPasswordCfg os command injection
CVE-2026-6156 9.8 CRITICAL Totolink A7100RU CGI cstecgi.cgi setIpQosRules os command injection
CVE-2026-6155 9.8 CRITICAL Totolink A7100RU CGI cstecgi.cgi setWanCfg os command injection
CVE-2026-6154 9.8 CRITICAL Totolink A7100RU CGI cstecgi.cgi setWizardCfg os command injection
CVE-2026-6140 9.8 CRITICAL Totolink A7100RU CGI cstecgi.cgi UploadFirmwareFile os command injection
CVE-2026-6139 9.8 CRITICAL Totolink A7100RU CGI cstecgi.cgi UploadOpenVpnCert os command injection
CVE-2026-6138 9.8 CRITICAL Totolink A7100RU CGI cstecgi.cgi setAccessDeviceCfg os command injection
CVE-2026-6194 8.8 HIGH Totolink A3002MU HTTP Request formWlanSetup sub_410188 stack-based overflow
CVE-2026-6168 8.8 HIGH TOTOLINK A7000R cstecgi.cgi setWiFiEasyGuestCfg stack-based overflow
CVE-2026-6157 8.8 HIGH Totolink A800R app.so setAppEasyWizardConfig buffer overflow

IV. Related Vulnerabilities

Same product: N300RH
Same vendor: Totolink
Same weakness: CWE-78

V. Comments for CVE-2026-6158

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