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4.9
SonicOS Firewall Can Crash After Authentication
CVE-2026-0402
Summary
A security issue in SonicOS firewalls can allow an attacker to crash the device after a user has logged in. This could cause disruptions to network services. To mitigate this, update your SonicOS firewalls to the latest version.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| sonicwall | sonicos | <= 7.3.2-7010 | – |
| sonicwall | sonicos | <= 8.2.0-8009 | – |
Original title
A post-authentication Out-of-bounds Read vulnerability in SonicOS allows a remote attacker to crash a firewall.
Original description
A post-authentication Out-of-bounds Read vulnerability in SonicOS allows a remote attacker to crash a firewall.
nvd CVSS3.1
4.9
Vulnerability type
CWE-125
Out-of-bounds Read
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0001 Vendor Advisory
Published: 24 Feb 2026 · Updated: 12 Mar 2026 · First seen: 6 Mar 2026