Widely deployed enterprise storage product; unauthenticated RCE could disrupt data protection operations.
CVE-2026-26354
Unauthenticated remote RCE via stack-based buffer overflow in Dell DD OS.
Is CVE-2026-26354 being exploited?
Not confirmed. CVE-2026-26354 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 0.50% probability of exploitation in the next 30 days.
How severe is CVE-2026-26354?
CVE-2026-26354 is rated High with a CVSS score of 8.1. 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-2026-26354?
Yes. A fix has been recorded for CVE-2026-26354. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-26354 affect?
CVE-2026-26354 affects Dell PowerProtect Data Domain, DD OS Feature Release 7.7.1.0–8.6, DD OS LTS2025 8.3.1.0–8.3.1.10, DD OS LTS2024 7.13.1.0–7.13.1.60. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-26354?
Patch/upgrade when fixed; restrict remote access and segment network.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary command execution on affected Data Domain devices; attacker could take control, disrupt backups, or tamper data.
Patch when possible
- affected< 8.6.1.10, 8.7.0.0 or later
- affected< 8.3.1.20 or later
- affected< 7.13.1.60 or later
- affected< 2.7.9 with DD OS 8.3.1.30
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.