CVE-2026-0400

Published: Feb 24, 2026Updated: Feb 26, 2026 Sources: CVE List NVD BDUCWE-134

4.9MEDIUM

NVD MITRE

Description

A post-authentication Format String vulnerability in SonicOS allows a remote attacker to crash a firewall.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:HPrivileges Required

High

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-134

Affected Products

SonicOS SonicWall Networking Infrastructure

sonicos sonicwall Networking Infrastructure

sonicwallcommercialUSNetworking Infrastructureaka sonicwall

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Execution

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References

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0001

psirt.global.sonicwall.com

Timeline

Published

Feb 24, 2026

Last Updated

Feb 26, 2026

News mentions

⚡ Weekly Recap: New Linux Flaw, PAN-OS Exploit, AI-Powered Attacks, OAuth Phishing and More
en·The Hacker News· Summary only·Jun 1, 2026

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