CVE-2026-1138
Unknown Unknown - Not Provided
Remote Buffer Overflow in UTT 进取 520W strcpy Function

Publication date: 2026-01-19

Last updated on: 2026-02-04

Assigner: VulDB

Description
A flaw has been found in UTT 进取 520W 1.7.7-180627. This affects the function strcpy of the file /goform/ConfigExceptQQ. Executing a manipulation can lead to buffer overflow. The attack may be performed from remote. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
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Meta Information
Published
2026-01-19
Last Modified
2026-02-04
Generated
2026-06-16
AI Q&A
2026-01-19
EPSS Evaluated
2026-06-15
NVD
CVE-2026-1138
EUVD
EUVD-2026-3242
Affected Vendors & Products
Showing 2 associated CPEs
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
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KEV
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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
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Mitigation Strategies

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]

Executive Summary

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]

Impact Analysis

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]

Detection Guidance

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]

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