Security readout for executives and security teams
Plain-English summary
Kiteworks Core before 9.2.0 has a command execution weakness that lets an authenticated user redirect command output to arbitrary file locations. In the worst case, this could overwrite important system files and help the user gain elevated access. The source rates it medium because exploitation requires high privileges and high complexity.
Executive priority
Treat this as a planned security update with elevated attention for environments handling sensitive files. It is not presented as an internet-wide emergency, but delaying patching leaves privileged-account compromise paths more damaging.
Technical view
CVE-2026-28269 is CWE-78 OS command injection in Kiteworks Core command execution functionality before 9.2.0. The reported behavior allows authenticated users to redirect command output to arbitrary file paths, potentially overwriting critical files and escalating access. CVSS 3.1 is 5.9: network, high complexity, high privileges required, no user interaction, high confidentiality and integrity impact.
Likely exposure
Organizations running Kiteworks Core versions earlier than 9.2.0 are potentially exposed. Exposure is most relevant where authenticated high-privilege users or compromised privileged accounts can reach the application over the network.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not listed as KEV in the bundle. Exploitation is constrained by high attack complexity and high required privileges, but successful abuse could affect sensitive files and access boundaries.
Researcher notes
Key limits are PR:H and AC:H, with no user interaction. The advisory describes arbitrary output redirection rather than providing exploit detail. Further assessment should focus on version confirmation, reachable administrative surfaces, and whether privileged account compromise could make this issue impactful.
Mitigation direction
- Upgrade Kiteworks Core to version 9.2.0 or later.
- Review the Kiteworks advisory for any environment-specific guidance.
- Prioritize privileged account protection until the upgrade is complete.
- Limit administrative access to trusted users and networks where feasible.
Validation and detection
- Inventory Kiteworks Core deployments and confirm versions.
- Verify whether any deployment is below version 9.2.0.
- Confirm the 9.2.0 patch is applied successfully.
- Review administrative activity and file integrity signals for suspicious changes.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-28269 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N0.75.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/kiteworks/security-advisories/security/advisories/GHSA-6j64-6fpp-9453CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.