SonicWall SonicOS vulnerabilities: known CVEs & security history
SonicWall · Network / Security · 9 tracked CVEs · 2 actively exploited · updated October 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all SonicWall SonicOS release lines — 9 in total, with 2 actively exploited in the wild. A CVE here doesn't mean your version is affected — check SonicWall SonicOS's current status and the safe version to run.
Known SonicWall SonicOS CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2024-53704⚡ exploited | critical | 9.8 | 95% | 2025 |
| CVE-2024-40766⚡ exploited | critical | 9.8 | 18% | 2024 |
| CVE-2024-3596 | critical | 9 | 15% | 2024 |
| CVE-2026-0204 | high | 8 | 0% | 2026 |
| CVE-2025-40601 | high | 7.5 | 1% | 2025 |
| CVE-2021-3450 | high | 7.4 | 18% | 2021 |
| CVE-2026-0205 | medium | 6.8 | 0% | 2026 |
| CVE-2021-3449 | medium | 5.9 | 64% | 2021 |
| CVE-2026-0206 | medium | 4.9 | 1% | 2026 |
Is my SonicWall SonicOS version affected?
The list above spans every release. To know whether your version is affected — and the minimum safe version to upgrade to — check it directly.
Check your SonicWall SonicOS version → · Monitor SonicWall SonicOS for new CVEs →
SonicWall SonicOS vulnerabilities — frequently asked
How many known vulnerabilities does SonicWall SonicOS have?
IsItPatched tracks 9 CVEs for SonicWall SonicOS, 2 of which are actively exploited (CISA KEV). 3 are critical-severity and 3 high-severity. These span every release line — what matters is whether the version you run is affected.
Does SonicWall SonicOS have any actively-exploited vulnerabilities?
Yes — 2 SonicWall SonicOS CVEs are in CISA's Known Exploited Vulnerabilities catalog, meaning they are confirmed exploited in the wild (2 linked to ransomware). Patch these as a priority.
What is the most severe SonicWall SonicOS vulnerability?
Among tracked issues, CVE-2024-53704 (CRITICAL, CVSS 9.8), which is actively exploited, ranks highest — a Improper authentication weakness.
Is SonicWall SonicOS safe to use?
It depends on the version. The latest supported SonicWall SonicOS release clears the known issues; older versions may still be affected. Check the exact version you run for a verdict.
CVE data aggregated from NVD, CISA KEV and EPSS (FIRST.org). Related: SonicWall SonicOS security status · SonicWall SonicOS end-of-life · actively-exploited CVEs. Always verify against SonicWall's advisories — see our disclaimer.