Stack-Based Buffer Overflow in TOTOLINK Router Product
CVE-2026-26731

9.8CRITICAL

Key Information:

Vendor

TOTOLINK
Status
A3002RU
Vendor
CVE Published:
17 February 2026

What is CVE-2026-26731?

The TOTOLINK A3002RU router, specifically version V2.1.1-B20211108.1455, has been identified as having a vulnerability that allows for a stack-based buffer overflow. This occurs through improper handling of the 'routernamer' parameter in the formDnsv6 function, potentially enabling an attacker to execute arbitrary code or disrupt the operation of the device. Users are advised to take necessary precautions and apply recommended patches.

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References

https://github.com/0xmania/cve/tree/main/TOTOLINK-A3002RU...

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

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