Vulnerability · Published Oct 14, 2026 · Assigned by sonicwall

CVE-2026-96540

High 8.8

In plain English

A high-severity incorrect authorization in Network Security Manager (NSM) from SonicWall. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.3%top 75.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
SonicWall	Network Security Manager (NSM)	4.3.1 and earlier versions

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0018 vendor-advisory