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CVE-2026-5176— Totolink A3300R cstecgi.cgi setSyslogCfg command injection

CVSS 7.3 · High EPSS 1.93% · P78

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-5176

Vulnerability Information
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Vulnerability Title
Totolink A3300R cstecgi.cgi setSyslogCfg command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in Totolink A3300R 17.0.0cu.557_b20221024. Affected is the function setSyslogCfg of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument provided results in command injection. The attack may be initiated 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: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 A3300R 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK A3300R是中国吉翁电子（TOTOLINK）公司的一款无线路由器。 TOTOLINK A3300R 17.0.0cu.557_b20221024版本存在命令注入漏洞，该漏洞源于对文件/cgi-bin/cstecgi.cgi中参数的操纵，可能导致命令注入。
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

VendorProductAffected VersionsCPESubscribe
TotolinkA3300R 17.0.0cu.557_b20221024 cpe:2.3:o:totolink:a3300r_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-5176

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 8263 chars
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III. Intelligence Information for CVE-2026-5176

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Vendor Advisories for CVE-2026-5176 (1)

Proof of Concept for CVE-2026-5176 (1)

Same Patch Batch · Totolink · 2026-03-31 · 3 CVEs total

CVE-2026-51776.3 MEDIUMTotolink A3300R cstecgi.cgi setWiFiBasicCfg command injection
CVE-2026-51786.3 MEDIUMTotolink A3300R cstecgi.cgi setIptvCfg command injection

IV. Related Vulnerabilities

Same product: A3300R
Same vendor: Totolink
Same weakness: CWE-77

V. Comments for CVE-2026-5176

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