High severity · published Sep 11, 2026
CVE-2026-89177
Howyar｜WeenyGenius - Use of Insecure Protocol
8.8
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
WeenyGenius · Howyar
through 12.2.031 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89177
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89177
www.twcert.org.tw
https://www.twcert.org.tw/en/cp-139-11200-ffc3c-2.html
www.twcert.org.tw
https://www.twcert.org.tw/tw/cp-132-11201-658c0-1.html
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