Auth-bypass in a widely deployed network security manager enabling full takeover of NSM and managed devices; enterprise-impacting and urgent.
CVE-2026-78328
Auth bypass in SonicWall NSM lets low-privileged admin escalate to SuperAdmin
Is CVE-2026-78328 being exploited?
Not confirmed. CVE-2026-78328 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-2026-78328?
CVE-2026-78328 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-2026-78328?
Yes. A fix has been recorded for CVE-2026-78328. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-78328 affect?
CVE-2026-78328 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-2026-78328?
Apply vendor patch immediately; restrict NSM admin access and audit/rotate credentials.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Low-privileged admin can escalate to SuperAdmin on SonicWall NSM, enabling full network-management control, config changes, and device takeover.
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.