CVE-2026-82308
High
Description
A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS SSL-VPN service, which could potentially enable a remote unauthenticated attacker to cause an application level denial of service.
SeverityHigh
CVSS7.5
Exploit probability—
Product
SonicOS
PublishedNov 6, 2026
First seenNov 6, 2026
Weakness typeCWE-122CWE-122
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| SonicWall SonicOS | 7.3.3-7015 and older versions, 8.2.2-8015 and older versions | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.