SonicOS firewalls
CVE-2024-40764: Heap-based buffer overflow in SonicOS
Heap-based buffer overflow vulnerability in the SonicOS IPSec VPN allows an unauthenticated remote attacker to cause Denial of Service (DoS).
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityHIGHCVSS 3.1 7.5
EPSS0.70%Chance of exploitation in 30 days
Public exploitNot tracked
FixSee advisory
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 (Gen6, Gen7) 6.5 | See the advisory |
| SonicOS (Gen6, Gen7) 7.0 | See the advisory |
| SonicOS (Gen6, Gen7) 7.1 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
Heap-based buffer overflow vulnerability in the SonicOS IPSec VPN allows an unauthenticated remote attacker to cause Denial of Service (DoS).
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.