Security readout for executives and security teams
Plain-English summary
A SuperAdmin who can reach SonicWall NSM’s on-premises management interface may execute commands on the underlying server. Successful exploitation could expose data, alter management operations, or disrupt the system. The required high-privilege account limits the attacker pool, but the potential impact remains critical.
Executive priority
Treat this as an urgent privileged-access risk. Inventory affected NSM systems immediately, reduce management-interface exposure, and follow SonicWall’s remediation guidance. Prioritize systems reachable from untrusted networks or administered through weakly controlled SuperAdmin accounts.
Technical view
CVE-2026-78327 is a CWE-78 OS command-injection vulnerability affecting SonicWall Network Security Manager On-Prem 4.3.0 and earlier. It is remotely reachable, requires SuperAdmin privileges, needs no user interaction, and can produce host-level remote code execution. CVSS 3.1 rates it 9.1 with complete confidentiality, integrity, and availability impact.
Likely exposure
Exposure exists where NSM On-Prem 4.3.0 or earlier is deployed and its management interface is reachable by a compromised or malicious SuperAdmin. Internet accessibility, weak administrator controls, or stolen privileged credentials would increase practical risk. The bundle does not establish default exposure.
Exploitation context
The supplied record is not listed in KEV and provides no evidence of active exploitation. Exploitation requires authenticated SuperAdmin access, so credential compromise or insider access is a likely prerequisite. No public exploit availability is established by the supplied sources.
Researcher notes
The vulnerability is command injection in the NSM On-Prem management interface, resulting in execution on the underlying host. The CVSS scope-change rating indicates impact may cross a security boundary. The supplied bundle does not identify the vulnerable parameter, attack endpoint, fixed version, indicators of compromise, or confirmed exploitation.
Mitigation direction
- Identify every NSM On-Prem deployment running version 4.3.0 or earlier.
- Review SonicWall’s advisory for the supported remediation or fixed release.
- Restrict the management interface to trusted administrative networks and authorized hosts.
- Review SuperAdmin membership and remove unnecessary or stale privileged accounts.
- Strengthen and rotate privileged credentials where compromise is suspected.
Validation and detection
- Confirm deployed NSM versions using authoritative asset and administration records.
- Verify the management interface is not unnecessarily internet-accessible.
- Enumerate SuperAdmin accounts and validate each account’s current business need.
- Review authentication and administrative logs for unexpected privileged access or host-level activity.
- Confirm remediation against SonicWall’s advisory after applying the vendor-supported change.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-78327 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H2.36CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.1CriticalVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0015CVE reference, sonicwall · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.