What is CVE-2023-40915?

CVE-2023-40915 is a high-severity vulnerability in Tenda Ax3, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2023-08-25.

How severe is CVE-2023-40915?

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

Buffer overflow in Tenda Ax3

CVE-2023-40915

Tenda AX3 v16.03.12.11 has a stack buffer overflow vulnerability detected at function form_fast_setting_wifi_set. This vulnerability allows attackers to cause a Denial of Service (DoS) via the ssid parameter.

Vulnerability class: Buffer Overflow

Published 2023-08-25 · 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: 0.007 (53.3th percentile), scored 2026-10-08.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Tenda Ax3
Tenda Ax3 Firmware — versions 16.03.12.11

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/Korey0sh1/IoT_vuln/blob/main/Tenda/AX3/form_fast_setting_wifi_set.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-40915?: CVE-2023-40915 is a high-severity vulnerability in Tenda Ax3, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2023-08-25.
How severe is CVE-2023-40915?: High severity. CVSS v3 base score is 7.5 out of 10.