What is CVE-2025-71019?

CVE-2025-71019 is a high-severity vulnerability in Tenda Ax1806, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-01-15.

How severe is CVE-2025-71019?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Tenda Ax1806

CVE-2025-71019

Tenda AX-1806 v1.0.0.1 was discovered to contain a stack overflow in the wanSpeed parameter of the sub_65B5C function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.

Vulnerability class: Buffer Overflow

Published 2026-01-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (27.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000

Affected products

Tenda Ax1806
Tenda Ax1806 Firmware — versions 1.0.0.1

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

github.com/0-fool/VulnbyCola/blob/main/Tenda/AX-1806/9/1.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-71019?: CVE-2025-71019 is a high-severity vulnerability in Tenda Ax1806, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-01-15.
How severe is CVE-2025-71019?: High severity. CVSS v3 base score is 7.5 out of 10.