What is CVE-2023-40193?

CVE-2023-40193 is a high-severity vulnerability in TP-Link Deco M4, classified under OS Command Injection. CVSS score: 8.0/10. Published 2023-09-06.

How severe is CVE-2023-40193?

High severity. CVSS v3 base score is 8.0 out of 10.

RCE in TP-Link Deco M4

CVE-2023-40193

Deco M4 firmware versions prior to 'Deco M4(JP)_V2_1.5.8 Build 20230619' allows a network-adjacent authenticated attacker to execute arbitrary OS commands.

Vulnerability class: Command Injection (OS Command Injection)

Published 2023-09-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (32.1th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.1% 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

TP-Link Deco M4 — versions firmware versions prior to 'Deco M4(JP)_V2_1.5.8 Build 20230619'
TP-Link Deco M4 — versions 2.0
TP-Link Deco M4 Firmware

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

www.tp-link.com/jp/support/download/deco-m4/v2/ (Product)
jvn.jp/en/vu/JVNVU99392903/ (Third Party Advisory)

Frequently asked questions

What is CVE-2023-40193?: CVE-2023-40193 is a high-severity vulnerability in TP-Link Deco M4, classified under OS Command Injection. CVSS score: 8.0/10. Published 2023-09-06.
How severe is CVE-2023-40193?: High severity. CVSS v3 base score is 8.0 out of 10.