CVE-2026-28199 Details
Description
An authenticated user with access to the NetBackup Flex OS management shell could read arbitrary files from the underlying operating system by supplying a specially crafted path argument to a diagnostic command. Successful exploitation could expose sensitive system configuration and credential material stored on the appliance.
A vulnerability allowing sensitive file disclosure via relative path traversal has been identified in NetBackup Flex OS versions prior to 6.4. An authenticated user with access to the management shell could exploit this vulnerability by supplying a specially crafted path argument to a diagnostic command. Successful exploitation could lead to the unauthorized reading of arbitrary files from the underlying operating system, potentially exposing sensitive system configuration and credential material stored on the appliance.
Users are advised to upgrade to NetBackup Flex OS version 6.4 or later. Additionally, management shell access should be restricted to authorized administrators only.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 18, 2026CISA-ADP
Assessed Sep 18, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/cohesity/SecAdvisory/blob/master/COH-2026-0001.md | ENISA | AdvisoryBundleRemedyVendor |
| https://www.cvcn.gov.it/cvcn/cve/CVE-2026-28199 | ENISA | Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-347 | Improper Verification of Cryptographic Signature | ENISA |
Affected Products
| Product | Versions |
|---|---|
| Cohesity NetBackup Flex OS | < 6.4 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 18, 2026 | CVE Modified | CISA-ADP |
| Sep 18, 2026 | New CVE Received | ENISA |
Volerion