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Totolink N300RH CVE-2026-6158

| EUVD-2026-21851 MEDIUM
OS Command Injection (CWE-78)
2026-04-13 VulDB GHSA-3cm3-qfjh-c5x9
Command Injection
5.5
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/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

8
CVSS changed
Apr 29, 2026 - 01:11 NVD
6.9 (MEDIUM) 5.5 (MEDIUM)
PoC Detected
Apr 29, 2026 - 01:00 vuln.today
Public exploit code
Analysis Generated
Apr 13, 2026 - 05:26 vuln.today
Severity Changed
Apr 13, 2026 - 05:22 NVD
HIGH MEDIUM
CVSS changed
Apr 13, 2026 - 05:22 NVD
7.3 (HIGH) 6.9 (MEDIUM)
EUVD ID Assigned
Apr 13, 2026 - 05:15 euvd
EUVD-2026-21851
Analysis Generated
Apr 13, 2026 - 05:15 vuln.today
CVE Published
Apr 13, 2026 - 04:00 nvd
MEDIUM 5.5

DescriptionNVD

A flaw has been found in Totolink N300RH 6.1c.1353_B20190305. Affected is the function setUpgradeUboot of the file upgrade.so. This manipulation of the argument FileName causes os command injection. The attack is possible to be carried out remotely. The exploit has been published and may be used.

AnalysisAI

Remote code execution in Totolink N300RH firmware 6.1c.1353_B20190305 allows unauthenticated network attackers to execute arbitrary OS commands via command injection in the FileName parameter of the setUpgradeUboot function in upgrade.so. Publicly available exploit code exists for this vulnerability, which carries a CVSS 6.9 score reflecting network-accessible attack vector with low complexity and no authentication requirements.

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CVE-2026-6158 vulnerability details – vuln.today
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