Stack-based Buffer Overflow in Tenda F456 by Tenda
CVE-2026-6197

8.7HIGH

Key Information:

Vendor

Tenda
Status
F456
Vendor
CVE Published:
13 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6197?

A security vulnerability has been identified in the Tenda F456 version 1.0.0.5, targeting the formWrlsafeset function within the /goform/AdvSetWrlsafeset file. Manipulating the 'mit_ssid' argument can lead to a stack-based buffer overflow, potentially allowing remote attackers to exploit the weakness. As this flaw has been publicly disclosed, it raises significant concerns about the security of affected devices. Users of Tenda F456 are advised to take immediate action to mitigate potential risks.

Affected Version(s)

F456 1.0.0.5

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-6197 - Proof of Concept

References

https://vuldb.com/vuln/357119
vdb-entrytechnical-description
https://vuldb.com/vuln/357119/cti
signaturepermissions-required
https://vuldb.com/submit/797468
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LtzHuster (VulDB User)
.