Cyber Posture

CVE-2026-31059

CriticalPublic PoCRCE

Published: 06 April 2026

Published
06 April 2026
Modified
09 April 2026
KEV Added
Patch
CVSS Score 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0085 75.1th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-31059 is a critical-severity Command Injection (CWE-77) vulnerability in Utt 520W Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 24.9% of CVEs by exploit likelihood; 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-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique. What defenders deploy: see the NIST 800-53 controls recommended below.
Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

prevent

Requires validation of all information inputs to the /goform/formDia component, directly preventing command injection via crafted strings.

prevent

Mandates identification, reporting, and correction of flaws like this command injection vulnerability in the device firmware.

preventdetect

Monitors and controls network communications to external interfaces, blocking or detecting unauthenticated remote access to the vulnerable /goform/formDia endpoint.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
Why these techniques?

CVE enables unauthenticated RCE via command injection (CWE-77) in public-facing web component (/goform/formDia), directly mapping to T1190 (Exploit Public-Facing Application) and facilitating Unix Shell command execution (T1059.004) on likely Linux-based network device.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

NVD Description

A remote command execution (RCE) vulnerability in the /goform/formDia component of UTT Aggressive HiPER 520W v3v1.7.7-180627 allows attackers to execute arbitrary commands via a crafted string.

Deeper analysisAI

CVE-2026-31059 is a remote command execution (RCE) vulnerability in the /goform/formDia component of UTT Aggressive HiPER 520W v3v1.7.7-180627. Published on 2026-04-06, it enables attackers to execute arbitrary commands via a crafted string and carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). The issue is classified under CWE-77 (Command Injection).

The vulnerability can be exploited over the network by unauthenticated attackers with low complexity and no user interaction required. Successful exploitation grants high-impact access, allowing full control over confidentiality, integrity, and availability of the affected device through arbitrary command execution.

Details on the vulnerability, including potential exploitation information, are documented in the GitHub repository at https://github.com/zxq0408/Vul202601/blob/main/9.md. No vendor advisories or patches are specified in available references.

Details

CWE(s)

Affected Products

utt
520w firmware
1.7.7-180627

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CVE-2026-2067Same product: Utt 520W

References