What is CVE-2026-38835?

CVE-2026-38835 is a critical-severity vulnerability in Tenda W30e, classified under Command Injection. CVSS score: 9.8/10. Published 2026-04-21.

How severe is CVE-2026-38835?

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

RCE in Tenda W30e

CVE-2026-38835

Tenda W30E V2.0 V16.01.0.21 was found to contain a command injection vulnerability in the formSetUSBPartitionUmount function via the usbPartitionName parameter. This vulnerability allows attackers to execute arbitrary commands via a crafted request.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-04-21 · 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: 0.026 (84.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.026 · change: +0.005

Affected products

Tenda W30e — versions 2.0
Tenda W30e Firmware — versions 16.01.0.21

Weakness classification (CWE)

CWE-77 — Command Injection

References

github.com/jsjbcyber/repo/blob/main/rep_2.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-38835?: CVE-2026-38835 is a critical-severity vulnerability in Tenda W30e, classified under Command Injection. CVSS score: 9.8/10. Published 2026-04-21.
How severe is CVE-2026-38835?: Critical severity. CVSS v3 base score is 9.8 out of 10.