What is CVE-2026-66152?

CVE-2026-66152 is a high-severity vulnerability in SonicWall Netextender, classified under CWE-29. CVSS score: 8.8/10. Published 2026-08-25.

How severe is CVE-2026-66152?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in SonicWall Netextender

CVE-2026-66152

A Path traversal vulnerability in the SonicWall NetExtender Linux client file extractor component allows an attacker to write arbitrary file as root.

Published 2026-08-25 · last modified 2026-08-31.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (40.9th percentile), scored 2026-10-10.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001

Affected products

SonicWall Netextender — versions 10.3.5 and earlier versions

Weakness classification (CWE)

CWE-29

References

psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0013 (vendor-advisory)

Frequently asked questions

What is CVE-2026-66152?: CVE-2026-66152 is a high-severity vulnerability in SonicWall Netextender, classified under CWE-29. CVSS score: 8.8/10. Published 2026-08-25.
How severe is CVE-2026-66152?: High severity. CVSS v3 base score is 8.8 out of 10.