Stack-based Buffer Overflow in Tenda RX3 Router
CVE-2025-5527

8.7HIGH

Key Information:

Vendor

Tenda
Status
Rx3
Vendor
CVE Published:
3 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-5527?

A stack-based buffer overflow vulnerability exists in the Tenda RX3 router's Save Static Route Data function, specifically within the /goform/SetStaticRouteCfg file. This may allow an attacker to manipulate the argument list and execute arbitrary code remotely. The exposure of this flaw puts users at risk as it can be exploited from outside the network, highlighting the urgent need for security measures. Exploits have already been disclosed, increasing the risk of attacks targeting vulnerable installations.

Affected Version(s)

RX3 16.03.13.11_multi_TDE01

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-2025-5527 - Proof of Concept

References

https://vuldb.com/?id.310967
vdb-entrytechnical-description
https://vuldb.com/?ctiid.310967
signaturepermissions-required
https://vuldb.com/?submit.586781
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

alc9700 (VulDB User)
.
CVE-2025-5527 : Stack-based Buffer Overflow in Tenda RX3 Router