What is CVE-2023-40839?

CVE-2023-40839 is a critical-severity vulnerability in Tenda Ac6, classified under OS Command Injection. CVSS score: 9.8/10. Published 2023-08-30.

How severe is CVE-2023-40839?

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

RCE in Tenda Ac6

CVE-2023-40839

Tenda AC6 US_AC6V1.0BR_V15.03.05.16_multi_TD01.bin function 'sub_ADF3C' contains a command execution vulnerability. In the "formSetIptv" function, obtaining the "list" and "vlanId" fields, unfiltered passing these two fields as parameters to the "sub_ADF3C" function to execute commands.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.010 (58.6th percentile) — read the EPSS interpretation.

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.

Affected products

Tenda Ac6 — versions 1.0
Tenda Ac6_firmware — versions 15.03.05.16
N/a — versions n/a

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2023-40839?: CVE-2023-40839 is a critical-severity vulnerability in Tenda Ac6, classified under OS Command Injection. CVSS score: 9.8/10. Published 2023-08-30.
How severe is CVE-2023-40839?: Critical severity. CVSS v3 base score is 9.8 out of 10.