EUVD-2026-90369Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Network-accessible admin function with low complexity and no UI, but requires administrator authentication (PR:H); arbitrary file write enabling code execution justifies C:H/I:H/A:H.
Primary rating from Vendor (cisa-cg).
CVSS VectorVendor: cisa-cg
Lifecycle Timeline
5DescriptionCVE.org
Kiteworks Email Protection Gateway before version 9.5.0 is vulnerable to a path traversal weakness in an administrative import function allowed an authenticated administrator to write files to arbitrary locations on the server. This could potentially be leveraged to execute arbitrary code on the underlying system.
AnalysisAI
Path traversal in the administrative import function of Kiteworks Email Protection Gateway allows an authenticated administrator to write files to arbitrary filesystem locations, which can potentially be escalated to arbitrary code execution on the underlying server. All versions prior to 9.5.0 are affected; exploitation requires a high-privileged admin account (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, 7.2) and the impact on confidentiality, integrity, and availability is rated High. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
No credit card · 7-day full trial
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated administrator account on the Kiteworks Email Protection Gateway (PR:H) and access to the administrative import function, which is the specific vulnerable feature. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but access-gated risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Kiteworks Email Protection Gateway to version 9.5.0 or later, which is the vendor-released fix for this path traversal; consult the vendor advisory at https://github.com/kiteworks/security-advisories/security/advisories/GHSA-p853-p65q-2vc8 for the official guidance and any product-specific instructions. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Kiteworks Email Protection Gateway deployments and confirm whether any run versions prior to 9.5.0; restrict administrative access to the import function to essential personnel, enforce MFA, review recent admin activity, and contact Kiteworks for a patch timeline. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Unauthenticated attackers who know a target's email address can take over Kiteworks Core accounts that use locally store
Improper certificate-assignment controls in Kiteworks Email Protection Gateway allow a remote, unauthenticated attacker
Stored cross-site scripting in Kiteworks Core (all versions prior to 9.5.0) enables unauthenticated attackers to persist
Authentication bypass in Kiteworks Email Protection Gateway (versions before 9.5.0) lets unauthenticated remote attacker
Server-side request forgery in Kiteworks Email Protection Gateway (versions before 9.5.0) lets a remote, unauthenticated
Server-side request forgery in Kiteworks Email Protection Gateway before 9.5.0 allows a remote, unauthenticated sender t
Unauthenticated server-side request forgery in Kiteworks Email Protection Gateway before version 9.5.0 lets a remote att
Server-side request forgery in Kiteworks Email Protection Gateway before 9.5.0 allows a remote, unauthenticated attacker
Server-side request forgery in Kiteworks Email Protection Gateway (all versions before 9.5.0) lets a remote, unauthentic
Command injection in Kiteworks Core's internal cluster-management function allows an attacker who already has code execu
Sandbox escape in Kiteworks Core's document-conversion feature (CVE-2026-102125, CVSS 8.8) allows code already executing
Authenticated privilege escalation in Kiteworks PDN (the Accellion-line private data network) before version 9.1.0 lets
Same weakness CWE-22 – Path Traversal
View allShare
External POC / Exploit Code
Leaving vuln.today