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.
Analysis and contextual insights are available on OpenCVE Cloud.
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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Fri, 18 Sep 2026 11:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Privilege Escalation via Cryptographic Signature Verification Bypass in NetBackup Flex OS Shell | |
| Weaknesses | CWE-347 | |
| References |
| |
| Metrics |
cvssV3_1
|
Subscriptions
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Status: PUBLISHED
Assigner: ENISA
Published:
Updated: 2026-09-18T14:31:44.992Z
Reserved: 2026-02-25T14:02:29.493Z
Link: CVE-2026-28198
No data.
Status : Received
Published: 2026-09-18T12:17:24.717
Modified: 2026-09-18T15:17:08.100
Link: CVE-2026-28198
No data.
OpenCVE Enrichment
No data.
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CWE-347
Improper Verification of Cryptographic Signature