Vulnerability · Published Sep 18, 2026 · Assigned by ENISA
CVE-2026-28199Sensitive File Disclosure via Relative Path Traversal in NetBackup Flex OS Shell
Low 3.3
In plain English
A low-severity security flaw in NetBackup Flex OS from Cohesity. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).
Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)<0.1%top 99.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cohesity | NetBackup Flex OS | 0 – before 6.4 |
Weakness: CWE-347 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
References
- https://www.cvcn.gov.it/cvcn/cve/CVE-2026-28199 government-resource
- https://github.com/cohesity/SecAdvisory/blob/master/COH-2026-0001.md vendor-advisory