Improper access control in SonicWall NSM export settings exposes data
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-863.
Summary
SonicWall Network Security Manager (NSM) on-prem versions 4.3.1 and earlier are affected. An improper access control flaw in export settings (CWE-863) lets a remote authenticated attacker obtain sensitive information. The attacker may escalate privileges to an administrator or intercept communications of other users of the NSM instance.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
An improper access control vulnerability has been identified in the SonicWall Network Security Manager (NSM) on-prem in export settings, potentially allowing a remote authenticated attacker to obtain sensitive information. This may allow the attacker to escalate privileges to an administrator or to intercept communications of other users of the NSM instance.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for Network Security Manager (NSM).
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
SonicWall Network Security Manager (NSM) — psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0018
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-74481 OS command injection in SonicWall Network Security Manager on-premPriority LOW 36
Timeline
- 2026-10-15 Threatist record created from CVE-2026-96540
- 2026-10-16 Alias added: GHSA-3w7w-j3fw-8r8g
- 2026-10-16 CVSS score added · CISA ADP
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-16 Priority changed: LOW → MEDIUM
References
More SonicWall vulnerabilities
- TI-2026-57684 Server-side request forgery in SonicWall SMA1000 KEVCVSS 3.1CRITICAL 10.0
- TI-2026-12965 Server-side request forgery in SonicWall SMA1000 KEVCVSS 3.1CRITICAL 10.0
- TI-2025-16819 Deserialization of untrusted data in SonicWall SMA1000 KEVCVSS 3.1CRITICAL 9.8
- TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
- TI-2021-03356 Stack-based buffer overflow in SonicWall SMA100 KEVCVSS 3.1CRITICAL 9.8
- TI-2021-03349 SQL injection in SonicWall SRA/SMA100 KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-96540 · CVE Program
- CVE-2026-96540 · NVD
- FIRST EPSS
- GHSA-3w7w-j3fw-8r8g · GitHub Advisory Database · CC BY 4.0
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