CVE-2026-2067
Remote Buffer Overflow in UTT 进取 520W strcpy Function
Publication date: 2026-02-06
Last updated on: 2026-02-10
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| utt | 520w_firmware | 1.7.7-180627 |
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?
[{'type': 'paragraph', 'content': 'CVE-2026-2067 is a critical buffer overflow vulnerability found in the UTT 进取 520W router version 1.7.7-180627. The flaw exists in the strcpy function within the file /goform/formTimeGroupConfig, specifically when handling the argument "year1."'}, {'type': 'paragraph', 'content': 'The vulnerability occurs because the input data is copied into a buffer without verifying that the input size is smaller than the buffer size, leading to a buffer overflow condition.'}, {'type': 'paragraph', 'content': 'This flaw can be exploited remotely by an attacker who controls the input parameters, potentially causing memory corruption.'}, {'type': 'paragraph', 'content': 'The vulnerability is classified under CWE-120 and CWE-119, which relate to classic buffer overflow and unsafe memory handling.'}, {'type': 'paragraph', 'content': 'No mitigation or countermeasures have been provided by the vendor, and a proof-of-concept exploit is publicly available.'}] [2, 3]
How can this vulnerability impact me? :
Exploitation of this vulnerability can impact the confidentiality, integrity, and availability of the affected system.
An attacker can remotely trigger the buffer overflow to cause a denial-of-service (DoS) attack, potentially crashing or destabilizing the device.
Because the vulnerability allows remote exploitation without requiring local or physical access, it poses a significant security risk.
Given the high severity score (CVSS v3.1 base score 8.8), successful exploitation could lead to serious disruption of network services relying on the affected router.
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?
[{'type': 'paragraph', 'content': 'This vulnerability affects the UTT 进取 520W router version 1.7.7-180627 and is triggered by sending specially crafted requests to the endpoint /goform/formTimeGroupConfig with a manipulated argument year1 that causes a buffer overflow.'}, {'type': 'paragraph', 'content': 'Detection can involve monitoring network traffic for suspicious HTTP requests targeting the /goform/formTimeGroupConfig path, especially those containing unusually long or malformed year1 parameters.'}, {'type': 'paragraph', 'content': 'Since the vulnerability is exploited remotely via HTTP requests, you can use network inspection tools or web server logs to identify attempts to exploit this flaw.'}, {'type': 'list_item', 'content': 'Use tools like tcpdump or Wireshark to capture HTTP traffic and filter for requests to /goform/formTimeGroupConfig.'}, {'type': 'list_item', 'content': "Example tcpdump command to capture relevant traffic: tcpdump -i <interface> -A 'tcp port 80 and (((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)' | grep '/goform/formTimeGroupConfig'"}, {'type': 'list_item', 'content': 'Check web server or device logs for HTTP POST or GET requests containing the parameter year1 with unusually long or suspicious values.'}, {'type': 'list_item', 'content': 'Use curl or similar tools to test the endpoint manually by sending crafted requests to see if the device responds abnormally or crashes.'}] [2, 3]
What immediate steps should I take to mitigate this vulnerability?
There are no vendor-provided patches or mitigations available for this vulnerability as the vendor did not respond to disclosure attempts.
Immediate mitigation steps include:
- Restrict or block remote access to the affected device, especially HTTP access to the /goform/formTimeGroupConfig endpoint.
- Implement network-level protections such as firewall rules or intrusion prevention systems (IPS) to detect and block exploit attempts targeting this vulnerability.
- Monitor the device for unusual behavior or crashes that may indicate exploitation attempts.
- Consider replacing the affected UTT 进取 520W device with a secure alternative, as no official fix is available.