Raw vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:NSummary
CVE-2026-28269 is a medium-severity OS Command Injection (CWE-78) vulnerability in Accellion Kiteworks. Its CVSS base score is 5.9 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 22% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2026-28269 affects Kiteworks, a private data network (PDN), in versions prior to 9.2.0. The vulnerability lies in the command execution functionality, where authenticated users can redirect command output to arbitrary file locations. Classified as CWE-78 (OS Command Injection), it has a CVSS v3.1 base score of 5.9 (AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N), indicating network accessibility but requiring high privileges and attack complexity.
High-privilege authenticated users can exploit this vulnerability over the network without user interaction. Successful exploitation allows overwriting critical system files, which could lead to elevated access on the affected system.
Kiteworks version 9.2.0 contains a patch addressing this issue. Additional details are available in the security advisory at https://github.com/kiteworks/security-advisories/security/advisories/GHSA-6j64-6fpp-9453.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-8918
Vulnerability Data
Kiteworks is a private data network (PDN). Prior to version 9.2.0, avulnerability in Kiteworks command execution functionality allows authenticated users to redirect command output to arbitrary file locations. This could be exploited to overwrite critical system files and gain elevated…
more
access. Version 9.2.0 contains a patch.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V1.2.5V1.2.8V15.2.5
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and evaluation can discover missing or incorrect command sanitization during development.
Input validation directly neutralizes or rejects special characters that would otherwise alter OS command structure.
Least privilege reduces the permissions available to any process that could be subverted by injected commands.
Least functionality restricts available OS commands and interpreters, limiting the blast radius of injection.
Secure engineering principles require proper neutralization of untrusted input before command construction.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
PR.PS-06's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.
Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing and code review target insecure use of operating-system command interfaces, catching command-injection flaws introduced during development.