What is CVE-2026-66147?

CVE-2026-66147 is a critical-severity vulnerability in Sonicwall Gms, classified under Code Injection. CVSS score: 9.4/10. Published 2026-08-11.

How severe is CVE-2026-66147?

Critical severity. CVSS v3 base score is 9.4 out of 10.

RCE in Sonicwall Gms

CVE-2026-66147

An unauthenticated command injection vulnerability was identified in the GMS Dispatcher Service in GMS 9.5.1 and earlier versions which allows remote attacker to perform remote code execution through specially crafted requests.

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H.

Affected products

Sonicwall Gms — versions 9.5.1 and earlier versions

Weakness classification (CWE)

CWE-94 — Code Injection

References

PSIRT@sonicwall.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-66147?: CVE-2026-66147 is a critical-severity vulnerability in Sonicwall Gms, classified under Code Injection. CVSS score: 9.4/10. Published 2026-08-11.
How severe is CVE-2026-66147?: Critical severity. CVSS v3 base score is 9.4 out of 10.