CVE-2026-28197
Privilege Escalation via Argument Injection in NetBackup Flex OS Shell
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
An authenticated, low-privileged user with access to the NetBackup Flex OS management shell could supply a specially crafted input to a privileged administrative command, causing it to execute arbitrary code with root-level permissions. Successful exploitation grants the attacker unrestricted control over the Flex appliance host and all hosted containers, fully compromising confidentiality, integrity, and availability.
| CWE | CWE-88 |
| Vendor | cohesity |
| Product | netbackup flex os |
| Published | Sep 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Cohesity / NetBackup Flex OS
0 < 6.4