CVE-2026-28198

An authenticated, low-privileged user with access to the NetBackup Flex OS management shell could bypass the cryptographic signature verification step of a privileged support command by supplying a specially formed access credential. Successful exploitation grants the attacker an unrestricted root shell with full control over the Flex appliance host and all hosted containers, completely compromising confidentiality, integrity, and availability.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/cohesity/SecAdvisory/blob/master/COH-2026-0001.md
https://www.cvcn.gov.it/cvcn/cve/CVE-2026-28198

Configurations

No configuration.

History

18 Sep 2026, 12:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-18 12:17

Updated : 2026-09-18 19:24

NVD link : CVE-2026-28198

Mitre link : CVE-2026-28198

CVE.ORG link : CVE-2026-28198

JSON object : View

Products Affected

No product.

CWE

CWE-347

Improper Verification of Cryptographic Signature

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