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Totolink A8000RU CVE-2026-7138

| EUVD-2026-25876 HIGH
OS Command Injection (CWE-78)
2026-04-27 VulDB
8.9
CVSS 4.0
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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 - 16:22 NVD
CRITICAL HIGH
CVSS changed
Apr 27, 2026 - 16:22 NVD
9.8 (CRITICAL) 8.9 (HIGH)
EUVD ID Assigned
Apr 27, 2026 - 16:15 euvd
EUVD-2026-25876
CVE Published
Apr 27, 2026 - 16:00 nvd
HIGH 8.9

DescriptionNVD

A vulnerability was detected in Totolink A8000RU 7.1cu.643_b20200521. This vulnerability affects the function setNtpCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument tz results in os command injection. The attack can be executed remotely. The exploit is now public and may be used.

Analysis

A vulnerability was detected in Totolink A8000RU 7.1cu.643_b20200521. This vulnerability affects the function setNtpCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. …

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CVE-2026-7138 vulnerability details – vuln.today

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