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A8000Ru CVE-2026-7139

| EUVDEUVD-2026-25878 HIGH
OS Command Injection (CWE-78)
2026-04-27 VulDB
Command Injection A8000Ru
8.9
CVSS 4.0 · NVD
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Severity by source

NVD PRIMARY
8.9 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

5
PoC Detected
Apr 27, 2026 - 18:35 vuln.today
Public exploit code
Severity Changed
Apr 27, 2026 - 17:22 NVD
CRITICAL HIGH
CVSS changed
Apr 27, 2026 - 17:22 NVD
9.8 (CRITICAL) 8.9 (HIGH)
EUVD ID Assigned
Apr 27, 2026 - 17:00 euvd
EUVD-2026-25878
CVE Published
Apr 27, 2026 - 16:15 nvd
HIGH 8.9

DescriptionCVE.org

A flaw has been found in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function setWiFiAclRules of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. This manipulation of the argument mode causes os command injection. The attack is possible to be carried out remotely. The exploit has been published and may be used.

Analysis

A flaw has been found in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function setWiFiAclRules of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. This manipulation of the argument mode causes os command injection. The attack is possible to be carried out remotely. The exploit has been published and may be used.

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OS command injection in Totolink A8000RU router firmware 7.1cu.643_b20200521 allows remote unauthenticated attackers to

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OS command injection in TOTOLINK A8000RU router firmware 7.1cu.643_b20200521 allows remote unauthenticated attackers to

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OS command injection in the Totolink A8000RU router (firmware 7.1cu.643_b20200521) allows remote unauthenticated attacke
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CVE-2026-9434 HIGH POC
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Same weakness CWE-78 – OS Command Injection

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Same technique Command Injection

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CVE-2026-7139 vulnerability details – vuln.today
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