Vulnerability · Published Sep 13, 2026 · Assigned by VulDB

CVE-2026-90606Totolink A3002MU boa formIpv6Setup buffer overflow

Critical 9.9

In plain English

A critical-severity buffer overflow in A3002MU from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 58% of all known vulnerabilities).

Severity (CVSS 3.1)9.9Critical

Exploit odds (30 days)0.9%top 41.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A security vulnerability has been detected in Totolink A3002MU Hh-B20211125.1046. This issue affects the function formIpv6Setup of the file /boafrm/formIpv6Setup of the component boa. The manipulation of the argument static_ipv6 leads to buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used.

Affected products (as reported)

Vendor	Product	Versions
Totolink	A3002MU	Hh-B20211125.1046

Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-403188 | Totolink A3002MU boa formIpv6Setup buffer overflow vdb-entry, technical-description
VDB-403188 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-90606 | CVE Analysis and Report third-party-advisory
Submit #914010 | totolink A3002MU Hh-B20211125.1046 Buffer Overflow third-party-advisory
https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3002MU/bof-formIpv6Setup.md exploit
https://www.totolink.net/ product