What is CVE-2026-113802?

CVE-2026-113802 is a critical-severity vulnerability in Wavlink Wl-Wn530be1-A, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-10-20.

How severe is CVE-2026-113802?

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

RCE in Wavlink Wl-Wn530be1-A

CVE-2026-113802

Wavlink WL-WN530BE1-A firmware through M30BE1_V251117 contains an OS command injection vulnerability in the sub_23B54 function of the ioos binary, which passes the unsanitized file_id parameter of /protocol.csp?opt=ovpn_file requests with type=del to popen(). A remote unauthenticated attacker can send a forged IP-FROM: 127.0.0.1 header to bypass login and execute arbitrary commands as root.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-10-20 · last modified 2026-10-21.

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

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Wavlink Wl-Wn530be1-A — versions M30BE1_V251117

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

github.com/F-yyjy/cve/blob/main/WN530BE1(en).md (exploit, third-party-advisory)
www.vulncheck.com/advisories/wavlink-wl-wn530be1-a-unauthenticated-os-command-i… (third-party-advisory)

Frequently asked questions

What is CVE-2026-113802?: CVE-2026-113802 is a critical-severity vulnerability in Wavlink Wl-Wn530be1-A, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-10-20.
How severe is CVE-2026-113802?: Critical severity. CVSS v3 base score is 9.8 out of 10.