CVE-2026-2071
Published: 07 February 2026
Summary
CVE-2026-2071 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Utt 520W Firmware. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 28.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly validates the 'except' argument in /goform/formP2PLimitConfig to prevent buffer overflow from improper input handling via strcpy.
Implements memory safeguards like address space layout randomization and non-executable stacks to block exploitation of the buffer overflow for arbitrary code execution.
Establishes a risk-based process to identify, prioritize, and remediate the buffer overflow flaw despite lack of vendor patch.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Buffer overflow in web management interface (/goform/) allows remote exploitation of public-facing application for RCE or DoS.
NVD Description
A vulnerability was found in UTT 进取 520W 1.7.7-180627. The impacted element is the function strcpy of the file /goform/formP2PLimitConfig. Performing a manipulation of the argument except results in buffer overflow. The attack is possible to be carried out remotely.…
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The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Deeper analysisAI
CVE-2026-2071 is a buffer overflow vulnerability in the UTT 进取 520W firmware version 1.7.7-180627. The issue resides in the strcpy function within the /goform/formP2PLimitConfig component, triggered by manipulation of the "except" argument. This flaw, classified under CWE-119 and CWE-120, allows improper handling of input leading to a buffer overflow and carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
The vulnerability can be exploited remotely by an attacker with low privileges (PR:L), requiring no user interaction and low attack complexity. Successful exploitation enables high-impact confidentiality, integrity, and availability violations, potentially resulting in arbitrary code execution, data compromise, or denial of service on the affected device.
No vendor patches or official mitigations are available, as the supplier was contacted early for disclosure but provided no response. An exploit is publicly available, increasing the risk of active exploitation. References include details from VulDB (ctiid.344638, id.344638, submit.745265) and a GitHub repository at https://github.com/cymiao1978/cve/blob/main/new/40.md.
Details
- CWE(s)