CVE-2026-102108CWE-502insecure-deserialization

CVE-2026-102108

High · published October 1, 2026

CVSS v3.1
7.2
EPSS
1%
Percentile
73.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01459 · 73.3th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-10-01T01:16Z
Affected products (1)
ProductVersionsFixed in
accellion/kiteworks< 9.5.09.5.0
References (2)
https://github.com/kiteworks/security-advisories/security/advisories/GHSA-837h-99j2-hxjr · 9119a7d8-5eab-497f-8521-727c672e3725https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json · 9119a7d8-5eab-497f-8521-727c672e3725
EPSS history
Timeline
  • 02 OCT 03:41Z
    EPSS moved — → 1%
    epss
  • 30 SEP 20:24Z
    Kiteworks Email Protection Gateway deserialization of untrusted data
    cvelistv5