SonicOS firewalls
CVE-2022-22278: A vulnerability in SonicOS CFS (Content filtering service) returns a large 403 forbidden HTTP response mess…
A vulnerability in SonicOS CFS (Content filtering service) returns a large 403 forbidden HTTP response message to the source address when users try to access prohibited resource this allows an attacker to cause HTTP Denial of Service (DoS) attack
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| SonicOS SonicOS Gen 7 TZ-Series 7.0 | See the advisory |
| SonicOS SonicOS Gen 7 NSa-Series 7.0 | See the advisory |
| SonicOS SonicOS Gen 7 NSv-Series 7.0 | See the advisory |
| SonicOS SonicOS Gen 7 NSsp-Series 7.0 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
A vulnerability in SonicOS CFS (Content filtering service) returns a large 403 forbidden HTTP response message to the source address when users try to access prohibited resource this allows an attacker to cause HTTP Denial of Service (DoS) attack
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.