CVE-2026-25857
Tenda G300-F Command Injection via formSetWanDiag
HIGH 8.6EPSS 3.2%
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.
- Affected
- Shenzhen Tenda Technology · Tenda G300-F
- CVSS v4.0 VULNCHECK
- 8.6 HIGH
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 - CVSS v3.1 NVD
- 8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 3.18% chance of exploitation in the next 30 days, 88th percentile
- Published
- 2026-02-07
- Updated
- 2026-05-11
Proof-of-concept exploits (1)
- eeeeeeeeeevan/CVE-2026-258571★ · 2026-02-12
Security advisories
- https://blog.evan.lat/blog/cve-2026-25857
- https://www.vulncheck.com/advisories/tenda-g300-f-command-injection-via-formsetwandiag
- https://www.tendacn.com/material/show/736333682028613