CVE-2026-89177: Howyar Weenygenius

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

WeenyGenius, a computer lab management system by Howyar Technologies, has a Use of Insecure Protocol vulnerability. Due to the reliance on ZMTP Null mode, unauthenticated attackers on the same network can capture packets to leak transmitted data, or perform replay attacks with forged commands to disrupt classroom operations.

Affected products

• Howyar Weenygenius: up to and including 12.2.031

Published 2026-09-11. Last modified 2026-09-11.