CVE-2026-26731 — HIGH (8.8)

Vulnerability Description

TOTOLINK A3002RU V2.1.1-B20211108.1455 was discovered to contain a stack-based buffer overflow via the routernamer`parameter in the formDnsv6 function.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Totolink	A3002Ru Firmware	2.1.1-b20211108.1455
Totolink	A3002Ru-V2	-

Related Weaknesses (CWE)

CWE-121 CWE-787

References

https://github.com/0xmania/cve/tree/main/TOTOLINK-A3002RU-boa-formDnsv6-StackOveExploitThird Party Advisory

FAQ

What is CVE-2026-26731?

CVE-2026-26731 is a vulnerability with a CVSS score of 8.8 (HIGH). TOTOLINK A3002RU V2.1.1-B20211108.1455 was discovered to contain a stack-based buffer overflow via the routernamer`parameter in the formDnsv6 function.

How severe is CVE-2026-26731?

CVE-2026-26731 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-26731?

Check the references section above for vendor advisories and patch information. Affected products include: Totolink A3002Ru Firmware, Totolink A3002Ru-V2.