# CVE-2026-89179: Howyar WeenyGenius missing integrity check in ZMTP

Source: https://junglewise.ai/threats/cve-2026-89179-howyar-weenygenius-missing-integrity-check-in-zmtp  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-11. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-89179 · Severity: medium · CVSS 4.3 · Published 2026-09-11

WeenyGenius is a computer lab management system used to manage student and teacher computers in educational environments. An unauthenticated attacker on the same network can intercept and replay student connection packets to forge the appearance that a student remains connected, disrupting classroom operations and potentially masking unauthorized access to lab systems.

Technologies: [Howyar WeenyGenius](https://junglewise.ai/threats/technologies/weenygenius). Vendors: [Howyar](https://junglewise.ai/threats/vendors/howyar).

## Quick answers

**Is CVE-2026-89179 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-89179 being exploited in the wild.

**How severe is CVE-2026-89179?** Medium severity, with a CVSS score of 4.3, published 11 September 2026.

**Which products and versions are affected?** Howyar WeenyGenius 12.2.031 and earlier.

**Is there a fix for CVE-2026-89179?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-89179 attacked?** It is attacked from the adjacent network.

**Am I affected by CVE-2026-89179?** Check whether you run Howyar WeenyGenius at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

CVE-2026-89179 is a missing integrity check vulnerability in WeenyGenius's ZMTP-based communication protocol. The vulnerability allows unauthenticated attackers on the same network to intercept a student's connection packet and replay it to the system, forging the appearance that the student remains connected even after they have disconnected. The attack requires network adjacency but no authentication or user interaction. The vulnerable component lacks cryptographic integrity verification for connection state messages. This vulnerability has been patched in version 12.3.033 and later.

## Affected products

- Howyar WeenyGenius 12.2.031 and earlier

## Timeline

- 2026-09-11: disclosed

## References

- [https://www.twcert.org.tw/en/cp-139-11200-ffc3c-2.html](https://www.twcert.org.tw/en/cp-139-11200-ffc3c-2.html)
- [https://www.twcert.org.tw/tw/cp-132-11201-658c0-1.html](https://www.twcert.org.tw/tw/cp-132-11201-658c0-1.html)

## Related threats

- [Howyar WeenyGenius origin validation error in teacher workstation spoofing](https://junglewise.ai/threats/cve-2026-89178-howyar-weenygenius-origin-validation-error-in-teacher-workstation)
- [Howyar WeenyGenius insecure protocol vulnerability in ZMTP](https://junglewise.ai/threats/cve-2026-89177-howyar-weenygenius-insecure-protocol-vulnerability-in-zmtp)