CVE-2026-4534Disclosure(tenda / fh451)

LOWCVSS 7.4 · HIGH

Exploit discussion active in current signal (2 latest mentions)

Immediate actions

  • Prioritize remediation for tenda fh451 systems immediately
  • 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 flaw has been found in Tenda FH451 1.0.0.9. This affects the function formWrlExtraSet of the file /goform/WrlExtraSet. This manipulation of the argument GO causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been published and may be used.

3.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-119CWE-121

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.

  • fh451
  • fh451_firmware

Threat summary

  • Public PoC and exploit tooling are both present
  • 7 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Exploit tool or code specified in 1 signal
  • PoC mentioned or linked in 1 signal
  • Technical details provided in 4 signals
  • Disclosure: 4 classified signals
  • General: 2 classified signals
  • Peaked 1d ago at 5 mentions (2026-03-22); latest day: 2
  • 7 total mentions across 2 days

Affected systems

Vendors
Products
fh451fh451_firmware

2 versions affected across 2 products

Deep dive

Activity timeline7 mentions / 2d
01345Mentions · 2026-03-22: 5Mentions · 2026-03-23: 2PoC Mentioned / Linked · 2026-03-23: 1Exploit Tool / Code · 2026-03-23: 1Technical Details · 2026-03-22: 2Technical Details · 2026-03-23: 203-2203-23
Signal classification3 categories
Disclosure
457.1%
General
228.6%
Exploit
114.3%
Referenced assets5 URLs
Classification over time
DateTotalLabels
2026-03-225
Disclosure4General1
2026-03-232
Exploit1General1
Full discourse7 posts
  • EdgeDetectOps@EdgeDetectOps
    Exploit

    CVE-2026-4534 affects Tenda FH451 version 1.0.0.9. Stack-based buffer overflow in formWrlExtraSet function via /goform/WrlExtraSet endpoint. Triggered by manipulating the GO argument. Exploit code is already public.

    Post summary

    CVE-2026-4534 is a stack‑based buffer overflow in Tenda FH451; exploit code is publicly available, but no patches or evidence of active exploitation are reported.

    1000035
    14 followersView on X
  • EdgeDetectOps@EdgeDetectOps
    General

    🚨 Today CVE: CVE-2026-4534 This one caught my attention. Another Tenda router. Another stack overflow. Another day ending in Y.

    Post summary

    The tweet points out that CVE-2026-4534 is a stack‑overflow issue on a Tenda router but offers no further details, tools, patches, or evidence of exploitation.

    100005
    14 followersView on X
  • CTIWatch@ctiwatchcloud
    General

    🔍 Today's Top Vulnerabilities 🔴 CVE-2019-25568 | CVSS 9.8 🟠 CVE-2026-4535 | CVSS 8.8 🟠 CVE-2026-4534 | CVSS 8.8 🔗 http://ctiwatch.cloud/vulnerabilities #CVE #Vulnerability #ThreatIntel

    Post summary

    A brief list of three CVEs and their CVSS scores is presented, without additional technical details, proof-of-concept references, or patch information.

    0001071
    5.6K followersView on X
  • CVEarity@CVEarity
    Disclosure

    ⚡ New CVE Alert: CVE-2026-4534 📊 Severity: 8.8 🚨 Risk Level: High 🧩 Affects: Multiple / Unspecified Products Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-4534 #CVE-2026-4534 #CVE #High  #CyberSecurity #InfoSec https://t.co/J4MDROJLsi

    Post summary

    The tweet announces the new CVE-2026-4534, notes its high severity, and links to the NVD page, but offers no further technical or exploit information.

    0000016
    111 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-4534 A flaw has been found in Tenda FH451 1.0.0.9. This affects the function formWrlExtraSet of the file /goform/WrlExtraSet. This manipulation of the argument GO causes sta… https://www.cve.org/CVERecord?id=CVE-2026-4534

    Post summary

    A new vulnerability (CVE‑2026‑4534) affecting Tenda FH451 routers is disclosed; technical details on the vulnerable function are provided but no PoC, exploit, or patch information is present.

    0000071
    56.8K followersView on X
  • RedPacket Security@RedPacketSec
    Disclosure

    CVE Alert: CVE-2026-4534 - Tenda - FH451 - https://www.redpacketsecurity.com/cve-alert-cve-2026-4534-tenda-fh451/ #OSINT #ThreatIntel #CyberSecurity #cve-2026-4534 #tenda #fh451

    Post summary

    The post announces CVE‑2026‑4534 affecting the Tenda FH451 device and provides a link to a security alert, but does not include any PoC, exploit code, patch, or evidence of active exploitation.

    0000079
    3.6K followersView on X
  • CVEFind.com@CveFindCom
    Disclosure

    [CVE-2026-4534: HIGH] Critical vulnerability in Tenda FH451 1.0.0.9 allows remote attackers to trigger a stack-based buffer overflow via a manipulated argument, exposing users to serious cyber threats.#cve,CVE-2026-4534,#cybersecurity https://cvefind.com/CVE-2026-4534

    Post summary

    The post announces CVE‑2026‑4534 as a critical stack‑based buffer overflow in Tenda FH451 firmware, providing technical details but no PoC, exploitation evidence, patch, or debunking information.

    0000034
    605 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
HWtendafh451---
OStendafh451_firmware1.0.0.9--

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