All vulnerabilities
CVE-2026-102106GHSA-wwv8-qhqg-4q76

Kiteworks Email Protection Gateway improper authentication

Kiteworks Email Protection GatewayNetwork & edge
CVSS
9.1Critical
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)1.07%Chance of exploitation activity in the next 30 days, higher than 64% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in9.5.0Fixed versionCVE List
Published30 Sep 2026Updated 2 Oct 2026CVE List

What fixes it

  • 9.5.0Email Protection GatewayCVE List
  • 9.5.0Kiteworks Email Protection Gateway, otherGitHub

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Improper authentication in a Kiteworks Email Protection Gateway administrative service. An administrative service in Kiteworks Email Protection Gateway did not consistently enforce administrator authentication, so the required password check could be bypassed. An attacker who referenced a valid administrator account could potentially create, modify, or delete internal users and managed domains and change their security-feature configuration without authenticating; deleting a managed domain also removes its user accounts and could lock administrators out of the gateway.

Text from CVE List

Affected versions 3

  • Email Protection Gatewayaffected: all versions before 9.5.0CVE List
  • Email Protection Gatewayunaffected: 9.5.0CVE List
  • Kiteworks Email Protection Gateway, other< 9.5.0GitHub

References 2