CVE-2026-102106: Kiteworks Email Protection Gateway · Improper Authentication
Affects Kiteworks Email Protection GatewaySource CVE Database V5
Not known to be exploited · CVSS 9.1 Critical : upgrade to 9.5.0 as a priority.
Data as of 14 Nov 2026, 20:43 UTC
- EPSS
- 1.0% chance of exploitation in 30 days – higher than 65% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 9.5.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 30 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 14 Nov 2026.
What to do
Upgrade Kiteworks Email Protection Gateway to 9.5.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| KiteworksEmail Protection Gateway | Affected
| Fixed in
|
AI-suggested
If you cannot patch yet, restrict access to the administrative service and monitor for unauthorized access attempts referencing administrator accounts.
Description
CVE-2026-102106 is an improper authentication vulnerability in the Kiteworks Email Protection Gateway administrative service. The service fails to consistently enforce administrator authentication, allowing attackers referencing a valid administrator account to bypass password checks. This flaw enables unauthorized creation, modification, or deletion of internal users and managed domains, as well as changes to security configurations. Deleting a managed domain can remove its user accounts and potentially lock out legitimate administrators.