CVE-2026-25857

HIGH

8.8

Description

Tenda G300-F router firmware version 16.01.14.2 and prior contain an OS command injection vulnerability in the WAN diagnostic functionality (formSetWanDiag). The implementation constructs a shell command that invokes curl and incorporates attacker-controlled input into the command line without adequate neutralization. As a result, a remote attacker with access to the affected management interface can inject additional shell syntax and execute arbitrary commands on the device with the privileges of the management process.

CVE Details

CVSS v3.1 Score8.8

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published2/7/2026

Last Modified3/5/2026

Sourcenvd

Honeypot Sightings0

Affected Products

tenda:g300-ftenda:g300-f_firmware

Weaknesses (CWE)

CWE-78

References

https://blog.evan.lat/blog/cve-2026-25857/(disclosure@vulncheck.com)

https://www.tendacn.com/material/show/736333682028613(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/tenda-g300-f-command-injection-via-formsetwandiag(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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