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.
Metrics
Affected Vendors & Products
References
History
Sat, 19 Sep 2026 23:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Cohesity
Cohesity netbackup Flex Os |
|
| Vendors & Products |
Cohesity
Cohesity netbackup Flex Os |
Sat, 19 Sep 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
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
|
Status: PUBLISHED
Assigner: ENISA
Published: 2026-09-18T11:12:23.941Z
Updated: 2026-09-18T14:31:44.992Z
Reserved: 2026-02-25T14:02:29.493Z
Link: CVE-2026-28198
Updated: 2026-09-18T14:30:11.540Z
Status : Deferred
Published: 2026-09-18T12:17:24.717
Modified: 2026-09-18T19:24:36.593
Link: CVE-2026-28198
No data.