Stack Overflow Vulnerability in Totolink A7000R Router
CVE-2025-63462

7.5HIGH

Key Information:

Vendor

Totolink
Status
A7000R Router
Vendor
CVE Published:
31 October 2025

What is CVE-2025-63462?

A stack overflow vulnerability exists in the Totolink A7000R router, specifically in version v9.1.0u.6115_B20201022. This flaw is triggered by the 'wifiOff' parameter within the sub_421A04 function, allowing attackers to craft malicious requests that result in a Denial of Service (DoS). Exploitation of this vulnerability can severely disrupt network operations, affecting users' access to the internet and services.

References

https://github.com/0-fool/VulnbyCola/blob/main/TOTOLINK/A...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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