Affects widely deployed Dell PowerProtect Data Domain backup/storage appliances; can bypass protections and impact enterprise backup integrity and availability.
CVE-2026-103779
Improper authentication in Dell PowerProtect Data Domain allows protection/auth bypass.
Is CVE-2026-103779 being exploited?
Not confirmed. CVE-2026-103779 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-2026-103779?
CVE-2026-103779 is rated High with a CVSS score of 8.3. 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-2026-103779?
Yes. A fix has been recorded for CVE-2026-103779. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-103779 affect?
CVE-2026-103779 affects Dell PowerProtect Data Domain FR 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-2026-103779?
Apply Dell DSA-2026-416 updates immediately; restrict remote access and review backup/log integrity.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Low-privilege remote attacker can bypass authentication/protections, enabling privilege escalation and potential data access or tampering on backup appliances.
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.