Vulnerability details

CVE-2026-110957

Wavlink WL-WN530BE2-A

Wavlink WL-WN530BE2-A Login Processing api.cgi sub_12580 os command injection

CVSS 4.0

10.0Critical

Official description

A vulnerability has been found in Wavlink WL-WN530BE2-A up to M30BE2_V250604. The affected element is the function sub_12580 of the file api.cgi of the component Login Processing. The manipulation of the argument REMOTE_ADDR leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 2026-09-24-841a51c6d5_tclinux.bin is sufficient to fix this issue. You should upgrade the affected component. The vendor confirms: "We confirm the finding, and it has already been addressed. In the current firmware the api=info&client=app handler no longer builds a shell command: the login script is now invoked through an argument vector (execvp) instead of system(), and the client address is length-limited and null-checked."

CVSS scores

Score	Version	Source	Vector
10.0Critical	4.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P`
10.0Critical	3.1	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C`
10.0Critical	3.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C`
10.0High	2.0	CVEProject cvelistV5 (CNA) (VulDB)	`AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:OF/RC:C`

Affected products

Vendor	Product	Versions	Source
Wavlink	WL-WN530BE2-A	M30BE2_V250604	CVEProject cvelistV5 (CNA)

References and advisories

https://vuldb.com/vuln/420570 vdb-entrytechnical-description
https://vuldb.com/vuln/420570/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-110957 third-party-advisory
https://vuldb.com/submit/920217 third-party-advisory
https://github.com/F-yyjy/cve/blob/main/WN530BE2-A_api-cgi.md exploit
https://dl.wavlink.com/firmware/RD/WN530BE2_WAVLINK-WO-2026-09-24-841a51c6d5_tclinux.bin patch

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Details

Published: 2026-10-15
Last updated: 2026-10-20
State: Published
Assigner (CNA): VulDB
Kolun priority: 47 · Medium

Exploit prediction (EPSS)

3.06%

Probability of exploitation in 30 days

87.6%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-77
Command Injection
CWE-78
OS Command Injection