CVE-2026-102108GHSA-837h-99j2-hxjr
Kiteworks Email Protection Gateway deserialization of untrusted data
Kiteworks Email Protection GatewayNetwork & edge
CVSS
7.2HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)1.46%Chance of exploitation activity in the next 30 days, higher than 73% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 9.5.0Email Protection GatewayCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
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.
Text from CVE List
Affected versions 2
- Email Protection Gatewayaffected: all versions before 9.5.0CVE List
- Email Protection Gatewayunaffected: 9.5.0CVE List