CVE-2026-25857Disclosure(tenda / g300-f)

LOWCVSS 8.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch tenda g300-f systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-78

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • g300-f
  • g300-f_firmware

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-02-07); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
Products
g300-fg300-f_firmware

1 version affected across 2 products

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-02-07: 1Mentions · 2026-02-08: 1Patch / Workaround · 2026-02-08: 1Technical Details · 2026-02-07: 1Technical Details · 2026-02-08: 102-0702-08
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-02-071
Disclosure1
2026-02-081
Patch1
Full discourse2 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-25857 Tenda G300-F router firmware versio 16.01.14.2 and prior contain an OS command injection vulnerability in the WAN diagnostic functionality (formSetWanDiag). The imple… https://www.cve.org/CVERecord?id=CVE-2026-25857

    Post summary

    CVE-2026-25857 reveals an OS command injection flaw in Tenda G300‑F routers’ WAN diagnostic feature, allowing attackers to execute arbitrary commands via the formSetWanDiag endpoint.

    00010241
    56.5K followersView on X
  • OffSeq | Adversary Tactics for Cyber Resilience@offseq
    Patch

    🚨 High-severity OS command injection (CVSS 8.6) in Tenda G300-F routers could allow remote takeover if management access is exposed. No patch yet — restrict access & monitor closely! https://radar.offseq.com/threat/cve-2026-25857-cwe-78-improper-neutralization-of-s-97d5f696 #O... https://t.co/N1U869EVMh

    Post summary

    A high‑severity OS command injection in Tenda G300‑F routers is disclosed without a patch yet; users should restrict management access and monitor for exploitation.

    0000048
    268 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
HWtendag300-f1.0--
OStendag300-f_firmware---

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