Buffer Overflow Vulnerability in Tenda AC15 Router
CVE-2026-4975

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ac15
Vendor
CVE Published:
27 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4975?

A stack-based buffer overflow vulnerability has been identified in the Tenda AC15 router within the POST Request Handler's function formSetCfm. This issue arises due to improper handling of the argument funcpara1, enabling attackers to exploit it remotely. Once exploited, this vulnerability can allow attackers to execute arbitrary code, potentially compromising the router's integrity. The exploit has been made public, emphasizing the need for immediate action by users to secure their devices against potential threats.

Affected Version(s)

AC15 15.03.05.19

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-2026-4975 - Proof of Concept

References

https://vuldb.com/?id.353862
vdb-entrytechnical-description
https://vuldb.com/?ctiid.353862
signaturepermissions-required
https://vuldb.com/?submit.778261
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

wxhwxhwxh_mie (VulDB User)
.