CVE-2026-1138
Remote Buffer Overflow in UTT 进取 520W strcpy 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
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include replacing the affected UTT 进取 520W device with an alternative product, as no patches or vendor mitigations are available. Additionally, restricting remote access to the device's web interface, especially blocking access to the /goform/ConfigExceptQQ endpoint, can reduce exposure. Network-level protections such as firewall rules to block suspicious traffic targeting this endpoint and monitoring for exploitation attempts are recommended. Since the vendor did not respond and no fixes exist, avoiding use of the vulnerable firmware version is advised. [3]
Can you explain this vulnerability to me?
CVE-2026-1138 is a critical buffer overflow vulnerability in the UTT 进取 520W device, version 1.7.7-180627. It occurs in the strcpy function within the /goform/ConfigExceptQQ file, where user input is copied without proper bounds checking. This unsafe string operation allows an attacker to overflow the buffer by sending specially crafted input remotely, potentially leading to system compromise. [2, 3]
How can this vulnerability impact me? :
Exploitation of this vulnerability can allow a remote attacker to cause a denial-of-service (DoS) attack against the affected router, and potentially compromise the confidentiality, integrity, and availability of the system. The attack requires no user interaction and can be performed remotely, making it a serious security risk. [2, 3]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
Detection can involve monitoring HTTP requests to the /goform/ConfigExceptQQ endpoint for unusually large or malformed payloads that could trigger the buffer overflow. Since the vulnerability involves the strcpy function without bounds checking, attempts to exploit it may be visible as abnormal traffic targeting this URL. Specific commands are not provided in the resources, but network monitoring tools like tcpdump or Wireshark can be used to capture HTTP traffic to the device's IP, filtering for requests to /goform/ConfigExceptQQ. For example, using tcpdump: tcpdump -i <interface> -A 'tcp port 80 and (((ip dst <device_ip>) and (tcp[32:4] contains "/goform/ConfigExceptQQ")))'. However, no explicit detection commands or signatures are provided in the resources. [2, 3]