CVE-2026-89178

Howyar|WeenyGenius - Origin Validation Error

Published Sep 11, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
WeenyGenius, a computer lab management system by Howyar Technologies, has an Origin Validation Error vulnerability. Unauthenticated attackers on the same network can spoof the teacher workstation and send broadcast packets, causing student computers to attempt to establish a connection with the attacker.

Analysis

AI-generated

Technical impact

WeenyGenius, a computer lab management system, has an origin validation error that lets an attacker on the same local network spoof the teacher workstation. By sending broadcast packets, the attacker can make student computers attempt to connect to the attacker’s machine, potentially allowing the attacker to receive those connections and launch further malicious activity.

Affected Systems

The vulnerability affects howyar technologies’ WeenyGenius system for any deployed instance that has not applied the vendor’s security update. The vendor recommends upgrading to version 12.3.033 or later to remediate the flaw.

Risk and Exploitability

The CVSS score of 8.7 indicates high severity. The EPSS score is not available, and the vulnerability is not listed in the CISA KEV catalog. An attacker does not need authentication and only needs to be on the same network segment. Because the exploit is straightforward—sending a simple broadcast packet—the risk is significant in environments where student computers share the LAN with untrusted devices. The attacker could redirect traffic from student machines to an attacker‑controlled host, providing a footholds for further network compromise.

Remediation

Vendor Solution

Update to version 12.3.033 or later.


OpenCVE Recommended Actions

  • Update Howyar Technologies’ WeenyGenius to version 12.3.033 or later, which fixes the origin validation error (CWE‑940).
  • If a patch cannot be applied immediately, isolate student computers from other network devices by segmenting the lab LAN or applying ACLs that block broadcast traffic from unknown hosts. This limits an attacker’s ability to send spoofed packets to student machines.
  • Deploy network monitoring or intrusion detection that unauthorized hosts. Such alerts help administrators detect and respond to spoofing attempts before student computers initiate connections.

Generated by OpenCVE AI on September 11, 2026 at 09:51 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Howyar
Howyar weenygenius
Vendors & Products Howyar
Howyar weenygenius
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description WeenyGenius, a computer lab management system by Howyar Technologies, has an Origin Validation Error vulnerability. Unauthenticated attackers on the same network can spoof the teacher workstation and send broadcast packets, causing student computers to attempt to establish a connection with the attacker.
Title Howyar|WeenyGenius - Origin Validation Error
Weaknesses CWE-940
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses
  • CWE-940

    Improper Verification of Source of a Communication Channel

Sources

Status
PUBLISHED
Assigner
twcert
Published
Updated
Sep 11, 2026, 3:31 PM
Reserved
Sep 11, 2026, 6:14 AM
Status
Deferred
Published
Sep 11, 2026, 8:16 AM
Modified
Sep 11, 2026, 4:17 PM