CVE-2026-0400

MEDIUM
2026-02-24 [email protected]
4.9
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Feb 24, 2026 - 15:21 nvd
MEDIUM 4.9

Description

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

Analysis

SonicOS firewalls are vulnerable to a post-authentication format string vulnerability that permits authenticated remote attackers to trigger a denial of service condition and crash the affected device. The attack requires valid credentials but can be executed over the network without user interaction. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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Priority Score

25
Low Medium High Critical
KEV: 0
EPSS: +0.2
CVSS: +24
POC: 0

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CVE-2026-0400 vulnerability details – vuln.today

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