Kiteworks Core Arbitrary File Write through Command Injection
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-77.
Summary
An optional, separately licensed repository-connector feature in Kiteworks Core did not neutralize special characters in a user-supplied path before passing it to an external command. An authenticated system administrator could inject additional commands and write arbitrary content to files owned by the service account running the connector, enabling code execution in that account's context; exploitation additionally requires network egress from the appliance to a system under the attacker's control.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Core (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 Core 9.5.1
19 records Highest priority Priority MEDIUM 2 MEDIUM, 17 LOW
Other records, highest priority first
- TI-2026-65283 Kiteworks Core Administrative Account Takeover through Stored Cross-site Scripting (XSS)Priority MEDIUM 46
- TI-2026-65256 Kiteworks Core OS Command InjectionPriority MEDIUM 40
- TI-2026-65262 Kiteworks Core Stored Cross-site Scripting (XSS)Priority LOW 37
Timeline
- 2026-10-02 Threatist record created from CVE-2026-102133
- 2026-10-09 EPSS moved to the 50th–90th percentile
More Accellion Kiteworks vulnerabilities
- 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
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences