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8.8
TOTOLINK A3002RU router has a buffer overflow in IPv6 setup
CVE-2026-26736
Summary
The TOTOLINK A3002RU_V3 router's IPv6 setup feature has a security flaw that could allow hackers to potentially crash the device or execute malicious code. This affects the device's stability and security. Router administrators should update the firmware to the latest version to fix this issue.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| totolink | a3002ru_firmware | <= 3.0.0-b20220304.1804 | – |
Original title
TOTOLINK A3002RU_V3 V3.0.0-B20220304.1804 was discovered to contain a stack-based buffer overflow via the static_ipv6 parameter in the formIpv6Setup function.
Original description
TOTOLINK A3002RU_V3 V3.0.0-B20220304.1804 was discovered to contain a stack-based buffer overflow via the static_ipv6 parameter in the formIpv6Setup function.
nvd CVSS3.1
8.8
Vulnerability type
CWE-787
Out-of-bounds Write
CWE-121
Stack-based Buffer Overflow
- https://github.com/0xmania/cve/tree/main/TOTOLINK-A3002RUV3.0-boa-formIpv6Setup-... Exploit Third Party Advisory
Published: 17 Feb 2026 · Updated: 11 Mar 2026 · First seen: 6 Mar 2026