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Fencer Vulns
high 7.5

CVE-2026-102143 json

Kiteworks Email Protection Gateway Unrestricted Upload of File with Dangerous Type

published 2026-09-30 39 d ago modified 2026-10-13 27 d ago also EUVD-2026-90270

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 25%
public exploits
0
none known

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.

Patch / fix

  • Kiteworks Email Protection Gateway 9.5.1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa vex VA-26-274-01 updated cvss 7.5

Kiteworks multiple vulnerabilities

  • Kiteworks Email Protection Gateway <9.5.1
    affected: vendor fix kiteworks.com
  • Kiteworks Email Protection Gateway 9.5.1
    fixed: vendor fix kiteworks.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
39 d ago

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

  • Kiteworks Email Protection Gateway

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality
  • CWE-434 Unrestricted Upload of File with Dangerous Type

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.