CVE-2026-4227
Remote Buffer Overflow in LB-LINK BL-WR9000 get_hidessid_cfg
Publication date: 2026-03-16
Last updated on: 2026-03-20
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| lb-link | bl-wr9000_firmware | 2.4.9 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-125 | The product reads data past the end, or before the beginning, of the intended buffer. |
| CWE-119 | The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. |
| CWE-120 | The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the LB-LINK BL-WR9000 device, specifically in the function sub_44D844 within the file /goform/get_hidessid_cfg. It is a buffer overflow vulnerability that can be triggered remotely by an attacker.
A buffer overflow occurs when more data is written to a buffer than it can hold, which can lead to unexpected behavior, crashes, or execution of malicious code.
The vulnerability has been publicly disclosed and the vendor did not respond to the notification.
How can this vulnerability impact me? :
This vulnerability can have serious impacts because it allows remote attackers to exploit a buffer overflow in the device.
Successful exploitation could lead to unauthorized code execution, potentially allowing attackers to take control of the device, disrupt its operation, or access sensitive information.
Given the high CVSS scores (up to 9.0 in version 2.0), the impact includes confidentiality, integrity, and availability compromises.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know