OS Command Injection in Wavlink WL-WN530BE1-A Firmware
CVE-2026-113802

9.3CRITICAL

Key Information:

Vendor

Wavlink

Status
Wl-wn530be1-a
Vendor
CVE Published:
20 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-113802?

The Wavlink WL-WN530BE1-A firmware version M30BE1_V251117 is susceptible to an OS command injection vulnerability located in the ioos binary's sub_23B54 function. This vulnerability arises from the unsanitized handling of the file_id parameter in requests made to /protocol.csp?opt=ovpn_file, particularly when the type is set to 'del'. A remote attacker, without authentication, can exploit this vulnerability by sending a specially crafted IP-FROM header set to 127.0.0.1, which can allow for arbitrary command execution with root privileges, posing significant security risks.

Affected Version(s)

WL-WN530BE1-A M30BE1_V251117

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-113802 - Proof of Concept

References

https://github.com/F-yyjy/cve/blob/main/WN530BE1(en).md
third-party-advisoryexploit
https://www.vulncheck.com/advisories/wavlink-wl-wn530be1-...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

F-yyjy
.