Vulnerability · Published Aug 25, 2026 · Assigned by sonicwall
CVE-2026-66153
High 7.0
In plain English
A high-severity security flaw in NetExtender from SonicWall. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).
Severity (CVSS 3.1)7.0High
Exploit odds (30 days)0.2%top 85.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The NEService auto-upgrade process insecurely handles temporary files in SonicWall NetExtender Linux client which allows an attacker to manipulate file paths.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| SonicWall | NetExtender | 10.3.5 and earlier versions |
Weakness: CWE-59 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0013 vendor-advisory