What is CVE-2026-26736?

CVE-2026-26736 is a high-severity vulnerability in Totolink A3002ru Firmware, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-02-17.

How severe is CVE-2026-26736?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Totolink A3002ru Firmware

CVE-2026-26736

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.

Vulnerability class: Buffer Overflow

Published 2026-02-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (70.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.013 · change: +0.009

Affected products

Weakness classification (CWE)

References

github.com/0xmania/cve/tree/main/TOTOLINK-A3002RUV3.0-boa-formIpv6Setup-StackOv… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-26736?: CVE-2026-26736 is a high-severity vulnerability in Totolink A3002ru Firmware, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-02-17.
How severe is CVE-2026-26736?: High severity. CVSS v3 base score is 8.8 out of 10.