CVE-2026-28199

Sensitive File Disclosure via Relative Path Traversal in NetBackup Flex OS Shell

Published Sep 18, 2026 CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Workaround

Restrict management shell access to authorized administrators only. No compensating control fully eliminates the risk; upgrading is required.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Cohesity
Cohesity netbackup Flex Os
Vendors & Products Cohesity
Cohesity netbackup Flex Os
Type Values Removed Values Added
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.
Title Sensitive File Disclosure via Relative Path Traversal in NetBackup Flex OS Shell
Weaknesses CWE-347
References
Metrics cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ENISA
Published
Updated
Sep 18, 2026, 2:31 PM
Reserved
Feb 25, 2026, 2:02 PM
Status
Deferred
Published
Sep 18, 2026, 12:17 PM
Modified
Sep 18, 2026, 7:24 PM