SonicWall NSM is widely deployed; authenticated SuperAdmin RCE can fully compromise management infrastructure and enable broad lateral movement, high-impact for many organizations.
CVE-2026-78327
Authenticated SuperAdmin OS command injection in SonicWall NSM On‑Prem leading to RCE
Is CVE-2026-78327 being exploited?
Not confirmed. CVE-2026-78327 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 1.6% probability of exploitation in the next 30 days.
How severe is CVE-2026-78327?
CVE-2026-78327 is rated Critical with a CVSS score of 9.1. 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-2026-78327?
Yes. A fix has been recorded for CVE-2026-78327. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-78327 affect?
CVE-2026-78327 affects SonicWall Network Security Manager (NSM) On-Prem Management interface. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-78327?
Apply vendor patch immediately; restrict SuperAdmin access and monitor logs
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated SuperAdmin can inject OS commands on NSM host, achieving remote code execution, full system compromise and lateral movement.
Immediate action required
- affected4.3.0 and earlier versions
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.