Buffer Overflow Vulnerability in Tenda AC23 HTTP POST Request Handler
CVE-2025-10803

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ac23
Vendor
CVE Published:
22 September 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-10803?

A buffer overflow vulnerability has been identified in the Tenda AC23 router, specifically in the sscanf function within the HTTP POST Request Handler for the SetPptpServerCfg component. This issue enables an attacker to exploit the manipulation of the startIp argument, potentially allowing remote execution of arbitrary code. The vulnerability affects versions of the Tenda AC23 up to 16.03.07.52 and poses significant risks due to its public disclosure, making affected devices attractive targets for cybercriminals.

Affected Version(s)

AC23 16.03.07.0

AC23 16.03.07.1

AC23 16.03.07.2

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-2025-10803 - Proof of Concept

References

https://vuldb.com/?id.325161
vdb-entrytechnical-description
https://vuldb.com/?ctiid.325161
signaturepermissions-required
https://vuldb.com/?submit.654237
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

QMSSDXN (VulDB User)
.