High severity · published Sep 30, 2026
CVE-2026-102099
Kiteworks Core arbitrary file write
7.2
CVSS
2%
EPSS
No
On KEV
Description
Kiteworks Core before version 9.5.0 is vulnerable to Arbitrary File Write. An improper restriction of a user-supplied file path in a Kiteworks administrative export feature could allow an authenticated administrator to write a file to an arbitrary location on the underlying host, potentially leading to command execution on the appliance. Exploitation requires an existing, authenticated administrative account with access to the affected export function.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Core · Kiteworks
before 9.5.0 · source: vendor
KI
Kiteworks · Accellion
before 9.5.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-102099
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-102099
vendor-advisory
https://github.com/kiteworks/security-advisories/security/advisories/GHSA-qj2g-2wfr-wg43
third-party-advisory
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json
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