NetBackup Flex is a widely deployed enterprise backup appliance; authenticated root RCE on its management shell can fully compromise backups and infrastructure, causing broad organizational impact.
CVE-2026-28197
Authenticated low-priv user can gain root RCE on NetBackup Flex appliances.
Is CVE-2026-28197 being exploited?
Not confirmed. CVE-2026-28197 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.37% probability of exploitation in the next 30 days.
How severe is CVE-2026-28197?
CVE-2026-28197 is rated Critical with a CVSS score of 9.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-28197?
Not known from our data. No patch reference has been recorded for CVE-2026-28197, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-28197 affect?
CVE-2026-28197 affects Veritas NetBackup Flex appliances, NetBackup Flex OS management shell, Containers hosted on Flex appliances. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-28197?
Isolate appliances, restrict shell access, collect logs, apply vendor patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated low-privileged user can execute arbitrary code as root on Flex host and containers, enabling full system, backup and data compromise.
Immediate action required
- affected< 6.4
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.