CVE-2026-31067Public exploit

Administrative command execution via unsanitized Isp_Name

Published Apr 6, 2026 · Updated Apr 6, 2026

OS command injection in UTT Aggressive 520W firmware 3v1.7.7-180627 and earlier allows remote authenticated users to execute commands. The /goform/formReleaseConnect handler passes the attacker-controlled Isp_Name value to doSystem("udhcpc-down.sh %s", Var) without neutralizing shell metacharacters. Administrative access to the router management interface from an adjacent network is required, and exploitation runs arbitrary operating-system commands on the device.

CVSS severity6.8
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

OS command injection in UTT Aggressive 520W firmware 3v1.7.7-180627 and earlier allows remote authenticated users to execute commands. The /goform/formReleaseConnect handler passes the attacker-controlled Isp_Name value to doSystem("udhcpc-down.sh %s", Var) without neutralizing shell metacharacters. Administrative access to the router management interface from an adjacent network is required, and exploitation runs arbitrary operating-system commands on the device.

The record

CVE
CVE-2026-31067
Published
Apr 6, 2026
Updated
Apr 6, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059
Attack vector
adjacent
Privileges
admin

Timeline

How it unfolded

  1. Apr 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8CISA-ADPCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo