Read the docs
TI-2026-65279 Aliases CVE-2026-102143

Kiteworks Email Protection Gateway Unrestricted Upload of File with Dangerous Type

Priority LOW 39CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass, Code execution
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-306 and CWE-434.

Summary

An unauthenticated attacker could cause a file with attacker-controlled content to be written to the appliance filesystem through an administrative upload handler that did not properly authenticate the request. This did not by itself result in code execution, which would require a separate vulnerability to place the file in an executable location.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00322 25th percentileScored 2026-11-07
Fix Fixed Email Protection Gateway (Kiteworks): 9.5.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AccellionEmail Protection Gatewaybefore 9.5.19.5.1Patch availableCNA
  • Email Protection Gateway VendorAccellion Affected before 9.5.1 Fixed in 9.5.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:accellion:kiteworks:*:*:*:*:*:*:*:*before 9.5.1VulnerableAccellion
  • cpe:2.3:a:accellion:kiteworks:*:*:*:*:*:*:*:* Versions before 9.5.1 Vulnerable ·Accellion

Remediation

  • Fix · CNA Email Protection Gateway (Kiteworks) Fixed in 9.5.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Kiteworks Email Protection Gateway 9.5.1

    9 records Highest priority Priority MEDIUM 1 MEDIUM, 8 LOW

    Other records, highest priority first

    • TI-2026-65284 Kiteworks Email Protection Gateway Improper Access ControlPriority MEDIUM 48
    • TI-2026-65264 Kiteworks Email Protection Gateway Improper AuthenticationPriority LOW 38
    • TI-2026-65266 Kiteworks Email Protection Gateway Remote Code ExecutionPriority LOW 36
    Show all 9 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-102143

References

Advisory 2

  • TI-2021-11694 Accellion Kiteworks before 7.4.0 allows an authenticated user to perform SQL Injection via LDAPGroup Search. CVSS 3.1HIGH 8.8
  • TI-2026-65251 Kiteworks Core Authentication Bypass in the Password Reset Workflow CVSS 3.1CRITICAL 9.8
  • TI-2026-65284 Kiteworks Email Protection Gateway Improper Access Control CVSS 3.1CRITICAL 9.4
  • TI-2026-65241 Kiteworks Email Protection Gateway server-side request forgery CVSS 3.1CRITICAL 9.1
  • TI-2026-65242 Kiteworks Email Protection Gateway improper authentication CVSS 3.1CRITICAL 9.1
  • TI-2026-65238 Kiteworks Email Protection Gateway server-side request forgery CVSS 3.1CRITICAL 9.1
See all 81 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences