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CVE-2026-9408— Totolink A8000RU Web Management cstecgi.cgi setStaticDhcpRules os command injection

CVSS 9.8 · Critical
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I. Basic Information for CVE-2026-9408

Vulnerability Information
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Vulnerability Title
Totolink A8000RU Web Management cstecgi.cgi setStaticDhcpRules os command injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was detected in Totolink A8000RU 7.1cu.643_b20200521. Affected by this issue is the function setStaticDhcpRules of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument enable results in os command injection. The attack may be performed from remote. The exploit is now public and may be used.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
TotolinkA8000RU 7.1cu.643_b20200521 cpe:2.3:o:totolink:a8000ru_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-9408

#POC DescriptionSource LinkShenlong Link
AI-Generated POCVerified env Premium
Qwen3.6-35B-A3B · 9527 chars
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III. Intelligence Information for CVE-2026-9408

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Other References for CVE-2026-9408 (1)

Same Patch Batch · Totolink · 2026-05-25 · 11 CVEs total

CVE-2026-94589.8 CRITICALTotolink A8000RU Web Management cstecgi.cgi setWanCfg os command injection
CVE-2026-94579.8 CRITICALTotolink A8000RU Web Management cstecgi.cgi UploadFirmwareFile os command injection
CVE-2026-94569.8 CRITICALTotolink A8000RU Web Management cstecgi.cgi setOpenVpnCfg os command injection
CVE-2026-94559.8 CRITICALTotolink A8000RU Web Management cstecgi.cgi UploadOpenVpnCert os command injection
CVE-2026-94549.8 CRITICALTotolink A8000RU Web Management cstecgi.cgi setOpenVpnCertGenerationCfg os command injecti
CVE-2026-94369.8 CRITICALTotolink A8000RU Web Management cstecgi.cgi setL2tpServerCfg os command injection
CVE-2026-94359.8 CRITICALTotolink A8000RU Web Management cstecgi.cgi setQosCfg os command injection
CVE-2026-94349.8 CRITICALTotolink A8000RU Web Management cstecgi.cgi setWiFiWpsCfg os command injection
CVE-2026-94339.8 CRITICALTotolink A8000RU Web Management cstecgi.cgi setMacFilterRules os command injection
CVE-2026-94329.8 CRITICALTotolink A8000RU Web Management cstecgi.cgi setWiFiAdvancedCfg os command injection

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-9408

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