Buffer Overflow Vulnerability in TOTOlink A3600R Router
CVE-2026-31027

9.8CRITICAL

Key Information:

Vendor

TOTOlink
Status
A3600R
Vendor
CVE Published:
1 April 2026

What is CVE-2026-31027?

The TOTOlink A3600R router, specifically in version 5.9c.4959, has a buffer overflow vulnerability found in the setAppEasyWizardConfig interface within the /lib/cste_modules/app.so file. This flaw arises from insufficient validation of the rootSsid parameter's length. Attackers can exploit this vulnerability remotely, leading to potential arbitrary code execution or denial of service on the affected device.

References

https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIO...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.