CVE-2026-4042Disclosure(tenda / i12)

LOWCVSS 7.4 · HIGH

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft
  • Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

A weakness has been identified in Tenda i12 1.0.0.6(2204). The affected element is the function formWifiMacFilterGet of the file /goform/WifiMacFilterGet. This manipulation of the argument index causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.

1.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-119CWE-121CWE-787

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Are you affected?

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

  • i12
  • i12_firmware

Threat summary

  • Public PoC is present in monitored signal
  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • PoC mentioned or linked in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 2 classified signals
  • General: 1 classified signal
  • Peaked 1d ago at 2 mentions (2026-03-12); latest day: 1
  • 3 total mentions across 2 days

Affected systems

Vendors
Products
i12i12_firmware

2 versions affected across 2 products

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-03-12: 2Mentions · 2026-03-13: 1PoC Mentioned / Linked · 2026-03-12: 1Technical Details · 2026-03-12: 103-1203-13
Signal classification2 categories
Disclosure
266.7%
General
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-03-122
Disclosure1General1
2026-03-131
Disclosure1
Full discourse3 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-4042 A weakness has been identified in Tenda i12 1.0.0.6(2204). The affected element is the function formWifiMacFilterGet of the file /goform/WifiMacFilterGet. This manipula… https://www.cve.org/CVERecord?id=CVE-2026-4042

    Post summary

    A weakness affecting the formWifiMacFilterGet function on Tenda i12 has been identified, but no proof‑of‑concept, exploit, active exploitation, patch, or detailed technical data is provided.

    00000139
    56.7K followersView on X
  • RedPacket Security@RedPacketSec
    General

    CVE Alert: CVE-2026-4042 - Tenda - i12 - https://www.redpacketsecurity.com/cve-alert-cve-2026-4042-tenda-i12/ #OSINT #ThreatIntel #CyberSecurity #cve-2026-4042 #tenda #i12

    Post summary

    The post merely announces a CVE alert and links to a website, providing no substantive vulnerability details or evidence of exploitation.

    0000086
    3.6K followersView on X
  • CVEFind.com@CveFindCom
    Disclosure

    [CVE-2026-4042: HIGH] Critical vulnerability in Tenda i12 1.0.0.6(2204) allows remote stack-based buffer overflow attack through formWifiMacFilterGet function in /goform/WifiMacFilterGet. Public exploit poses ...#cve,CVE-2026-4042,#cybersecurity https://cvefind.com/CVE-2026-4042

    Post summary

    CVE-2026-4042 is a newly disclosed high‑severity stack‑over‑flow vulnerability in the Tenda i12, with a public exploit referenced but no patch or active exploitation reports yet.

    0000049
    601 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
HWtendai12---
OStendai12_firmware1.0.0.6\(2204\)--

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