Vulnerability · Published Nov 1, 2026 · Assigned by VulDB

CVE-2026-120276WAVLINK WN536AX6-A Web Management ioos sub_416760 os command injection

Critical 10.0

In plain English

A critical-severity OS command injection in WN536AX6-A from WAVLINK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 3.2% (higher than 88% of all known vulnerabilities).

Severity (CVSS 3.1)10.0Critical

Exploit odds (30 days)3.2%top 11.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A weakness has been identified in WAVLINK WN536AX6-A V260507_2.0.0. This vulnerability affects the function sub_416760 of the file /bin/ioos of the component Web Management Interface. This manipulation of the argument group_name causes os command injection. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.

Affected products (as reported)

Vendor	Product	Versions
WAVLINK	WN536AX6-A	V260507_2.0.0

Weakness: CWE-78, CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-429620 | WAVLINK WN536AX6-A Web Management ioos sub_416760 os command injection vdb-entry, technical-description
VDB-429620 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-120276 | CVE Analysis and Report third-party-advisory
Submit #919502 | Wavlink Router Firmware V260507_2.0.0 OS Command Injection third-party-advisory
https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK_WN536AX6-A%20Router/WAVLINK_WN536AX6-A_openvpn_cli_group_command_injection.md exploit