What is CVE-2026-66145?

CVE-2026-66145 is a critical-severity vulnerability in SonicWall Gms, classified under Code Injection. CVSS score: 9.1/10. Published 2026-08-11.

How severe is CVE-2026-66145?

Critical severity. CVSS v3 base score is 9.1 out of 10.

RCE in SonicWall Gms

CVE-2026-66145

An unauthenticated remote code execution vulnerability was identified in GMS 9.5.1 (Build 9510.1044) and earlier versions which allows remote attacker to read sensitive data and perform arbitrary file write via zipslip.

Vulnerability class: RCE (Remote Code Execution)

Published 2026-08-11 · last modified 2026-08-28.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.007 (49.7th percentile), scored 2026-09-27.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.001

Affected products

SonicWall Gms — versions 9.5.1 and earlier versions

Weakness classification (CWE)

CWE-94 — Code Injection

References

psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0011 (vendor-advisory)

Frequently asked questions

What is CVE-2026-66145?: CVE-2026-66145 is a critical-severity vulnerability in SonicWall Gms, classified under Code Injection. CVSS score: 9.1/10. Published 2026-08-11.
How severe is CVE-2026-66145?: Critical severity. CVSS v3 base score is 9.1 out of 10.