Affects widely used enterprise backup/storage management (Dell PowerProtect Data Domain MDC); exploitation can disrupt backup infrastructure and operations.
CVE-2026-103799
Missing authorization in Dell PowerProtect Data Domain MDC enabling unauthorized system operations.
Is CVE-2026-103799 being exploited?
Not confirmed. CVE-2026-103799 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.
How severe is CVE-2026-103799?
CVE-2026-103799 is rated Critical with a CVSS score of 9.6. 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-2026-103799?
Yes. A fix has been recorded for CVE-2026-103799. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-103799 affect?
CVE-2026-103799 affects Dell PowerProtect Data Domain Management Center Feature Release 7.7.1.0 - 8.8, LTS2024 7.13.1.0 - 7.13.1.80, LTS2025 8.3.1.0 - 8.3.1.40, LTS2026 8.6.1.0 - 8.6.1.20. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-103799?
Apply Dell security update immediately; restrict/segment management access; audit logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Low-privileged remote attacker can perform unauthorized operations on managed systems (privilege escalation, control/disruption of backup infrastructure).
Immediate action required
- affected< 8.9.0.0 or later
- affected< 7.13.1.90 or later
- affected< 8.3.1.50 or later
- affected< 8.6.1.30 or later
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.