CVE-2026-3698
Remote Buffer Overflow in UTT HiPER 810G NTP Function
Publication date: 2026-03-08
Last updated on: 2026-03-10
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| utt | 810g_firmware | to 1.7.7-171114 (inc) |
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-2026-3698 is a critical buffer overflow vulnerability found in the UTT HiPER 810G router firmware up to version 1.7.7-171114. The flaw exists in the strcpy function within the /goform/NTP file, where data is copied without proper bounds checking. This unsafe use of strcpy allows an attacker to send a specially crafted request to the router's /goform/NTP endpoint, causing a buffer overflow condition."}, {'type': 'paragraph', 'content': 'This vulnerability can be exploited remotely and the exploit code is publicly available, making it easier for attackers to leverage this flaw.'}] [1, 3]
How can this vulnerability impact me? :
The buffer overflow vulnerability can lead to serious impacts including denial of service (DoS) or potentially other malicious actions that compromise the affected system.
An attacker can remotely exploit this flaw to compromise the confidentiality, integrity, and availability of the router, potentially disrupting network operations or gaining unauthorized control.
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 can be detected by monitoring for suspicious requests sent to the "/goform/NTP" endpoint on UTT HiPER 810G devices, as the exploit involves sending specially crafted data to this endpoint to trigger a buffer overflow.'}, {'type': 'paragraph', 'content': 'Detection commands could include using network monitoring tools like tcpdump or Wireshark to capture HTTP requests targeting the "/goform/NTP" path, looking for unusually long or malformed parameters that could indicate an exploit attempt.'}, {'type': 'list_item', 'content': "tcpdump -i <interface> -A 'tcp port 80 and (((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)' | grep '/goform/NTP'"}, {'type': 'list_item', 'content': 'Use web server or device logs to search for requests containing "/goform/NTP" with abnormally long parameter values.'}] [1, 3]
What immediate steps should I take to mitigate this vulnerability?
[{'type': 'paragraph', 'content': 'Currently, there are no known countermeasures or mitigations available for this vulnerability.'}, {'type': 'paragraph', 'content': 'The recommended immediate step is to replace the affected UTT HiPER 810G device or firmware version with an alternative product or updated firmware once available.'}, {'type': 'paragraph', 'content': 'Additionally, restricting remote access to the device, especially blocking access to the "/goform/NTP" endpoint, can help reduce the risk of exploitation.'}] [3]