CVE-2026-102128: Kiteworks Email Protection Gateway · Improper Authentication
Affects Kiteworks Email Protection GatewaySource CVE Database V5
Not known to be exploited · CVSS 7.5 High : upgrade to 9.5.1 soon.
Data as of 14 Nov 2026, 20:43 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 9.5.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NExploitation 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 9.5.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| KiteworksEmail Protection Gateway | Affected
| Fixed in
|
AI-suggested
If you cannot patch yet, restrict access to the Email Protection Gateway and monitor for suspicious activity related to account provisioning.
Description
CVE-2026-102128 is an improper authentication vulnerability in Kiteworks Email Protection Gateway. It allows the gateway to act on the Kiteworks platform on behalf of an unauthenticated user and provision platform accounts for unknown identities. A remote attacker without authentication could exploit this flaw to gain control over a platform account. The vulnerability affects versions prior to 9.5.1. The CVSS score is 7.5, indicating high severity due to the potential for unauthorized account control without user interaction.