CVE-2025-40601
High
Description
A Stack-based buffer overflow vulnerability in the SonicOS SSLVPN service allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could cause an impacted firewall to crash.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Sonicwall Sonicos
PublishedNov 20, 2025
First seenNov 20, 2025
Weakness typeCWE-121CWE-121
How to fix
Update
- sonicwall sonicos7.3.1-7013, 8.0.3-8011 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sonicwall sonicos | 7.1.1-7040 ≤ v < 7.3.1-7013, v < 8.0.3-8011 | 7.3.1-7013, 8.0.3-8011 |
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