๐Ÿ” CVE Alert

CVE-2026-102149

CRITICAL 9.4

Kiteworks Email Protection Gateway Improper Access Control

CVSS Score
9.4
EPSS Score
0.0%
EPSS Percentile
0th

Kiteworks Email Protection Gateway did not sufficiently restrict which account a certificate could be assigned to. This could allow an attacker to associate a certificate with another user's account, affecting the confidentiality and integrity of that account's encrypted mail and, where certificate-based login is enabled, potentially permitting unauthorized access to the account.

CWE CWE-306
Vendor kiteworks
Product email protection gateway
Published Sep 30, 2026
Last Updated Sep 30, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low

Affected Versions

Kiteworks / Email Protection Gateway
0 < 9.5.1

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
github.com: https://github.com/kiteworks/security-advisories/security/advisories/GHSA-c9w5-4frw-7wqq raw.githubusercontent.com: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json