What is CVE-2023-49040?

CVE-2023-49040 is a critical-severity vulnerability in Tenda Ax1803, classified under Command Injection. CVSS score: 9.8/10. Published 2023-11-27.

How severe is CVE-2023-49040?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Tenda Ax1803

CVE-2023-49040

An issue in Tneda AX1803 v.1.0.0.1 allows a remote attacker to execute arbitrary code via the adslPwd parameter in the form_fast_setting_internet_set function.

Vulnerability class: Command Injection (OS Command Injection)

Published 2023-11-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.015 (73.7th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Tenda Ax1803
Tenda Ax1803 Firmware — versions 1.0.0.1

Weakness classification (CWE)

CWE-77 — Command Injection

References

github.com/Anza2001/IOT_VULN/blob/main/Tenda/AX1803/form_fast_setting_internet_… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-49040?: CVE-2023-49040 is a critical-severity vulnerability in Tenda Ax1803, classified under Command Injection. CVSS score: 9.8/10. Published 2023-11-27.
How severe is CVE-2023-49040?: Critical severity. CVSS v3 base score is 9.8 out of 10.