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CVE-2026-102128— Kiteworks Email Protection Gateway Improper Authentication

Quick assessment

Affected
Kiteworks Email Protection Gateway
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kiteworks 邮件保护网关中存在身份验证缺陷，导致该网关能够代表一个未经其认证的用户在 Kiteworks 平台上执行操作，并为一个它此前并不知晓的身份创建平台账户。远程且未认证的攻击者可能利用此漏洞获取对某个平台账户的控制权。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-102128

Vulnerability Information
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Vulnerability Title
Kiteworks Email Protection Gateway Improper Authentication
Source: CVE Program / CVE List V5
Vulnerability Description
An identity-verification weakness in Kiteworks Email Protection Gateway allowed the gateway to act on the Kiteworks platform on behalf of a user it had not authenticated, and to provision a platform account for an identity it did not already know. A remote, unauthenticated sender could potentially exploit this to obtain control of a platform account.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Kiteworks Email Protection Gateway 0 ~ 9.5.1 -

II. Public POCs for CVE-2026-102128

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III. Intelligence Information for CVE-2026-102128

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Vendor Advisories for CVE-2026-102128 (1)

Other References for CVE-2026-102128 (1)

Same Patch Batch · Kiteworks · 2026-09-30 · 61 CVEs total

CVE-2026-102115 9.8 CRITICAL Kiteworks Core Authentication Bypass in the Password Reset Workflow
CVE-2026-102149 9.4 CRITICAL Kiteworks Email Protection Gateway Improper Access Control
CVE-2026-102147 9.3 CRITICAL Kiteworks Core Administrative Account Takeover through Stored Cross-site Scripting (XSS)
CVE-2026-102104 9.1 CRITICAL Kiteworks Email Protection Gateway server-side request forgery
CVE-2026-102095 9.1 CRITICAL Kiteworks Email Protection Gateway server-side request forgery
CVE-2026-102102 9.1 CRITICAL Kiteworks Email Protection Gateway server-side request forgery
CVE-2026-102105 9.1 CRITICAL Kiteworks Email Protection Gateway server-side request forgery
CVE-2026-102103 9.1 CRITICAL Kiteworks Email Protection Gateway server-side request forgery
CVE-2026-102106 9.1 CRITICAL Kiteworks Email Protection Gateway improper authentication
CVE-2026-102120 8.8 HIGH Kiteworks Core OS Command Injection
CVE-2026-102125 8.8 HIGH Kiteworks Core Sandbox Escape
CVE-2026-102092 8.7 HIGH Kiteworks Core stored XSS
CVE-2026-102100 8.7 HIGH Kiteworks Core stored XSS
CVE-2026-102121 8.6 HIGH Kiteworks Secure Data Forms Exposure of Sensitive Information to an Unauthorized Actor
CVE-2026-102126 8.1 HIGH Kiteworks Core Stored Cross-site Scripting (XSS)
CVE-2026-102101 8.1 HIGH Kiteworks Core deserialization of untrusted data
CVE-2026-102113 7.8 HIGH Kiteworks Core Local Privilege Escalation
CVE-2026-102112 7.8 HIGH Kiteworks Core Local Privilege Escalation
CVE-2026-102118 7.8 HIGH Kiteworks Core before version 9.5.0 is vulnerable to Local Privilege Escalation
CVE-2026-102091 7.5 HIGH Kiteworks Secure Data Forms server-side request forgery

Showing top 20 of 61 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Email Protection Gateway
Same vendor: Kiteworks
Same weakness: CWE-287

V. Comments for CVE-2026-102128

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