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Fencer Vulns
medium 5.3

CVE-2026-102144 json

Kiteworks Email Protection Gateway Uncontrolled Resource Consumption

published 2026-09-30 39 d ago modified 2026-10-07 33 d ago also EUVD-2026-90268

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

A resource exhaustion vulnerability in Kiteworks Email Protection Gateway allowed an unauthenticated remote attacker to repeatedly trigger a comparatively expensive server-side operation, causing a partial denial of service.

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 5.3

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

0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

  • Kiteworks Email Protection Gateway

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality
  • CWE-400 Uncontrolled Resource Consumption

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.