CVE-2026-102135

On a Kiteworks Email Protection Gateway cluster with database replication enabled, a party trusted by the cluster could submit a crafted serialized object that was deserialized without sufficient validation, potentially allowing code execution as the gateway service account. Replication is disabled by default, and exploitation requires control of a trusted cluster peer or administrative access to the appliance.

CVSS 3.1

6.6CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

1.3% chance of exploitation in the next 30 days; higher than 69% of CVEs (scores of 2026-10-25)

CWE

CWE-502

Published

2026-09-30

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

Affected

• accellion:kiteworks

References

• https://github.com/kiteworks/security-advisories/security/advisories/GHSA-vmwr-r5xq-hp49
• https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json

Check your stackJSON