Buffer overflow in Tenda Ac6
CVE-2025-70252
An issue was discovered in /goform/WifiWpsStart in Tenda AC6V2.0 V15.03.06.23_multi. The index and mode are controllable. If the conditions are met to sprintf, they will be spliced into tmp. It is worth noting that there is no size check,which leads to a stack overflow vulnerability.
Vulnerability class: Buffer Overflow
Published · last modified .
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 (36.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Tenda Ac6 — versions 2.0
- Tenda Ac6 Firmware — versions 15.03.06.23_multi
Weakness classification (CWE)
References
- www.tenda.com.cn/material/show/2855 (Product)
- github.com/akuma-QAQ/CVEreport/tree/main/D-link/CVE-2025-70252 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-70252?
- CVE-2025-70252 is a high-severity vulnerability in Tenda Ac6, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-03-02.
- How severe is CVE-2025-70252?
- High severity. CVSS v3 base score is 7.5 out of 10.