CVE-2026-25857

HIGH EPSS 84.8%
Published Feb 7, 20264mo ago · Modified Jun 17, 20261w ago
8.6 CVSS 4.0
High
Find Similar
Published Feb 7, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
8.6
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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 High
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
84.8% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-78 OS Command Injection Injection

Affected Products 2

VendorProductVersionRange
tendag300-f_firmware* ≤16.01.14.2
tendag300-f1.0any

References 3

  • blog.evan.lat https://blog.evan.lat/blog/cve-2026-25857/
    ExploitThird Party Advisory
  • tendacn.com https://www.tendacn.com/material/show/736333682028613
    Product
  • vulncheck.com https://www.vulncheck.com/advisories/tenda-g300-f-command-injection-via-formsetwandiag
    Third Party AdvisoryVDB Entry

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.