CVE-2026-1137
Remote Buffer Overflow in UTT 进取 520W WebAuth Function
Publication date: 2026-01-19
Last updated on: 2026-02-04
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| utt | 进取_520w | 1.7.7-180627 |
| utt | 520w_firmware | to 1.7.7-180627 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| 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?
CVE-2026-1137 is a critical buffer overflow vulnerability in the UTT 进取 520W router version 1.7.7-180627. It occurs in the function strcpy within the file /goform/formWebAuthGlobalConfig, where input data is copied without checking its size, leading to a buffer overflow. This flaw allows a remote attacker to manipulate input parameters to trigger the overflow, potentially causing denial-of-service or other impacts on the device. [1, 3]
How can this vulnerability impact me? :
This vulnerability can be exploited remotely to cause a buffer overflow, which may lead to denial-of-service (DoS) attacks against the affected device. Additionally, it can compromise the confidentiality, integrity, and availability of the system, potentially allowing attackers to disrupt device operation or gain unauthorized control. [1, 3]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by monitoring HTTP requests to the endpoint /goform/formWebAuthGlobalConfig on the UTT 进取 520W router, version 1.7.7-180627. Specifically, look for unusual or oversized input parameters that might trigger the strcpy buffer overflow. Network intrusion detection systems (NIDS) can be configured to alert on suspicious POST requests to this path. Additionally, you can use tools like curl or wget to manually test the endpoint by sending crafted payloads to see if the device behaves unexpectedly or crashes. Example command to test the endpoint: curl -X POST http://<router-ip>/goform/formWebAuthGlobalConfig -d "param=AAAA..." (with a large payload). Monitoring device logs for crashes or abnormal behavior after such requests can also help detect exploitation attempts. [1, 3]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include restricting access to the vulnerable endpoint /goform/formWebAuthGlobalConfig by implementing network-level controls such as firewall rules to block external access to the router's management interface. Disable remote management if possible. Since no vendor patch or fix is available and the vendor did not respond, it is recommended to replace the affected UTT 进取 520W device with a secure alternative. Monitoring for exploit attempts and isolating affected devices from critical networks can reduce risk until replacement is done. [3]