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CVE-2026-79912— TOTOLINK N600R cstecgi.cgi getCurrentTime command injection

Quick assessment

Affected
TOTOLINK N600R
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TOTOLINK n600r是中国TOTOLINK公司的一款双频无线路由器。 TOTOLINK n600r 4.3.0cu.7647_B20210106版本存在安全漏洞，该漏洞源于对/cgi-bin/cstecgi.cgi文件中getCurrentTime函数的ntp_server参数操作不当，导致命令注入，攻击者可远程发起攻击。

CVSS 8.3 · High EPSS 2.11% · P82

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
TOTOLINK N600R 4.3.0cu.7647_B20210106 affected
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I. Basic Information for CVE-2026-79912

Vulnerability Information
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Vulnerability Title
TOTOLINK N600R cstecgi.cgi getCurrentTime command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in TOTOLINK N600R 4.3.0cu.7647_B20210106. The impacted element is the function getCurrentTime of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument ntp_server results in command injection. The attack can be initiated remotely. The exploit is now public and may be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
TOTOLINK n600r 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK n600r是中国TOTOLINK公司的一款双频无线路由器。 TOTOLINK n600r 4.3.0cu.7647_B20210106版本存在安全漏洞，该漏洞源于对/cgi-bin/cstecgi.cgi文件中getCurrentTime函数的ntp_server参数操作不当，导致命令注入，攻击者可远程发起攻击。
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 N600R 4.3.0cu.7647_B20210106 cpe:2.3:o:totolink:n600r_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-79912

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
Success marker: VULNERABLE: ntp_server injection `; cat /flag.txt` executed in the container shell; proof token PROOF_b9f9c5ac05bacc5b exfiltrated through the CGI response
Reproduction recording is a Pro+ exclusive
Watch the full sandbox build + live exploit recording for this CVE. Limited-time ¥499/mo.
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claude_code · 7545 chars
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III. Intelligence Information for CVE-2026-79912

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Vendor Advisories for CVE-2026-79912 (1)

Proof of Concept for CVE-2026-79912 (1)

Other References for CVE-2026-79912 (2)

IV. Related Vulnerabilities

Same product: N600R
Same vendor: TOTOLINK
Same weakness: CWE-77

V. Comments for CVE-2026-79912

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