CVE-2026-102124: Kiteworks Core Missing Authentication for Critical Function

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-30 · updated 2026-10-08
Weakness: CWE-306

Description

A Kiteworks appliance setup interface did not enforce authentication once the appliance had completed initial configuration. An unauthenticated attacker with network access to the appliance could read and modify a limited set of setup records, including a contact name and email address captured during initial configuration.

Affected products

Kiteworks Email Protection Gateway: before 9.5.0 — fixed in 9.5.0

How to fix

Upgrade to a fixed version: Kiteworks Email Protection Gateway 9.5.0. Check the vendor advisory for mitigations.

References

https://github.com/kiteworks/security-advisories/security/advisories/GHSA-q85p-q4v6-7w6f
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json

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