CVE intelligence

CVE-2026-66151

Vulnerability intelligence

Published Aug 7, 2026Sources checked Oct 7, 2026

5.5MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-66151 and is rated Medium severity with a CVSS score of 5.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

SonicWall PSIRT Advisories guidance

Vendor revision: Aug 6, 2026

Install the applicable fixed SonicWall release for your product and branch.

Vendor-listed releases

SonicWall Global VPN Client (GVC): 5.0.0.2008 and higher versions

CISA KEVNot listedBased on the latest collected catalog

EPSS0.2%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-66151?

SonicWall Global VPN Client version 4.10.8.1108 and earlier is vulnerable to an out-of-bounds kernel memory read in the SWIPsec.sys driver, which could allow a local attacker to cause a system crash.

Source: NVD