---
id: CVE-2026-102108
title: >-
  An authenticated administrator of Kiteworks Email Protection Gateway could
  submit a crafted serialized object to a cluster management interface that was
  deserialized without sufficient validation, potentially allowing arbitrary
  code exec…
summary: >-
  An authenticated administrator of Kiteworks Email Protection Gateway could
  submit a crafted serialized object to a cluster management interface that was
  deserialized without sufficient validation, potentially allowing arbitrary
  code exec…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-502
vendor: Kiteworks
product: Email Protection Gateway
affected:
  - email_protection_gateway < 9.5.0
published: '2026-09-30'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T21:16:57.737'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102108'
references:
  - url: >-
      https://github.com/kiteworks/security-advisories/security/advisories/GHSA-837h-99j2-hxjr
    label: 9119a7d8-5eab-497f-8521-727c672e3725
  - url: >-
      https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json
    label: 9119a7d8-5eab-497f-8521-727c672e3725
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-30T21:25:07.825Z'
---

## Overview

An authenticated administrator of Kiteworks Email Protection Gateway could submit a crafted serialized object to a cluster management interface that was deserialized without sufficient validation, potentially allowing arbitrary code execution in the context of the gateway service account. Exploitation requires an administrator account holding a specific queue-management privilege.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.