---
title: "CVE-2026-89177: Howyar Technologies WeenyGenius - Use of Insecure Protocol"
description: "Howyar Technologies WeenyGenius contains a use of insecure protocol caused by reliance on ZMTP Null mode, letting unauthenticated attackers on the same network capture packets or perform replay attacks, exploit requires network access."
url: https://panop.io/threat-heartbeat/CVE-2026-89177/
---

# CVE-2026-89177 Howyar Technologies WeenyGenius - Use of Insecure Protocol

Howyar Technologies WeenyGenius contains a use of insecure protocol caused by reliance on ZMTP Null mode, letting unauthenticated attackers on the same network capture packets or perform replay attacks, exploit requires network access.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.36% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89177)

## Details

Type

Use of Insecure Protocol

Impact

Information Disclosure, Denial Of Service

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

11 September 2026

Updated

15 October 2026

Weakness

[CWE-757](https://cwe.mitre.org/data/definitions/757.html)

## Vendor fix

Update to the latest version with secure protocol support.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-89177](https://nvd.nist.gov/vuln/detail/CVE-2026-89177)
- [https://www.twcert.org.tw/tw/cp-132-11201-658c0-1.html](https://www.twcert.org.tw/tw/cp-132-11201-658c0-1.html)
- [https://www.twcert.org.tw/en/cp-139-11200-ffc3c-2.html](https://www.twcert.org.tw/en/cp-139-11200-ffc3c-2.html)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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