Stack-based Buffer Overflow in Tenda F451 Web Management Interface
CVE-2026-11557

8.7HIGH

Key Information:

Vendor

Tenda
Status
F451
Vendor
CVE Published:
8 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-11557?

A vulnerability in Tenda F451 routers has been found within the Web Management Interface, specifically in the function fromNatlimit. An attacker could execute a remote exploit by manipulating the argument 'page', potentially leading to a stack-based buffer overflow. This exposure allows unauthorized entities to exploit the weakness, raising serious security concerns. The exploit has been made publicly available, emphasizing the importance of immediate patching to mitigate any risks associated with this vulnerability.

Affected Version(s)

F451 1.0.0.7

F451 1.0.0.9

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-2026-11557 - Proof of Concept

References

https://vuldb.com/vuln/369167
vdb-entrytechnical-description
https://vuldb.com/vuln/369167/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-11557
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

hacker128 (VulDB User)
.