CVE-2026-0400
Format String Vulnerability in SonicOS Causes Firewall Crash
Publication date: 2026-02-24
Last updated on: 2026-02-26
Assigner: SonicWALL, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| sonicwall | sonicos | to 7.3.2-7010 (exc) |
| sonicwall | sonicos | to 8.2.0-8009 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-134 | The product uses a function that accepts a format string as an argument, but the format string originates from an external source. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a post-authentication Format String vulnerability found in SonicOS, the operating system used by SonicWall devices. It allows a remote attacker, who has already authenticated, to exploit the format string issue to cause the firewall to crash.
How can this vulnerability impact me? :
The primary impact of this vulnerability is that a remote attacker can crash the firewall. This could lead to denial of service, disrupting network security and potentially causing downtime or loss of protection for the network behind the firewall.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know