CVE-2026-110957
Wavlink WL-WN530BE2-A Login Processing api.cgi sub_12580 os command injection
- Critical 10.0
- A public exploit reference is listed
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."
Key facts
- Published
- 15 Oct 2026
- Last changed
- 20 Oct 2026
- Assigned by
- VulDB
- EPSS
- 3.066% likely to be exploited in the next 30 days, higher than 87.837% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: poc; Automatable: yes; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 10.0CVSS 4.0, Criticalfrom the 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 - 10.0CVSS 3.1, Criticalfrom the 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 - 10.0CVSS 3.0, Criticalfrom the 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 - 10.0CVSS 2.0, Highfrom the CNA (VulDB)
AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:OF/RC:C
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Wavlink | WL-WN530BE2-A |
|
Timeline
- 15 Oct 2026 Advisory disclosed
- 15 Oct 2026 VulDB entry created
- 15 Oct 2026 VulDB entry last update
- 15 Oct 2026 Published
Weakness
Practice this bug class
HackZoneLabs has a hands-on lab on OS command injection (CWE-78).