What is CVE-2023-38865?

CVE-2023-38865 is a critical-severity vulnerability in Comfast Cf-Xr11, classified under Command Injection. CVSS score: 9.8/10. Published 2023-08-15.

How severe is CVE-2023-38865?

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

RCE in Comfast Cf-Xr11

CVE-2023-38865

COMFAST CF-XR11 V2.7.2 has a command injection vulnerability detected at function sub_4143F0. Attackers can send POST request messages to /usr/bin/webmgnt and inject commands into parameter timestr.

Vulnerability class: Command Injection (OS Command Injection)

Published 2023-08-15 · 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: 0.024 (83.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000

Affected products

Comfast Cf-Xr11
Comfast Cf-Xr11 Firmware — versions 2.7.2

Weakness classification (CWE)

CWE-77 — Command Injection

References

github.com/TTY-flag/my_iot_vul/tree/main/COMFAST/CF-XR11/Command_Inject5 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-38865?: CVE-2023-38865 is a critical-severity vulnerability in Comfast Cf-Xr11, classified under Command Injection. CVSS score: 9.8/10. Published 2023-08-15.
How severe is CVE-2023-38865?: Critical severity. CVSS v3 base score is 9.8 out of 10.