Stack-Based Buffer Overflow in TOTOLINK X15 Router
CVE-2025-5503

8.7HIGH

Key Information:

Vendor

Totolink
Status
X15
Vendor
CVE Published:
3 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-5503?

The TOTOLINK X15 router is exposed to a stack-based buffer overflow vulnerability due to improper handling of the deviceMacAddr argument in the formMapReboot function. This flaw allows attackers to remotely execute arbitrary code by sending crafted requests, potentially leading to system compromise. The vulnerability was not addressed promptly by the vendor following its disclosure, heightening the risk for users who have not yet applied necessary patches.

Affected Version(s)

X15 1.0.0-B20230714.1105

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-2025-5503 - Proof of Concept

References

https://vuldb.com/?id.310917
vdb-entrytechnical-description
https://vuldb.com/?ctiid.310917
signaturepermissions-required
https://github.com/Yhuanhuan01/TOTOlink/blob/main/TOTOlin...
exploit

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

.
CVE-2025-5503 : Stack-Based Buffer Overflow in TOTOLINK X15 Router