Cyber Resilience

CVE-2026-31067

MediumPublic PoC

Published: 06 April 2026

Published
06 April 2026
Modified
07 April 2026
KEV Added
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Patch
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CVSS Score v3.1 6.8 CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0022 44.4th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-31067 is a medium-severity OS Command Injection (CWE-78) vulnerability in Utt 520W Firmware. Its CVSS base score is 6.8 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 44.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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

CWE(s)
CWE-78

Related Threats

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.
attack.mitre.org →
Why these techniques?

Direct RCE via OS command injection (CWE-78) in a public-facing web form endpoint on a network device.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

Affected Assets

utt
520w firmware
1.7.7-180627

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

References