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Vulnerability Intelligence

CVE-2026-0400 | Mondoo Vulnerability Intelligence

Vulnerability IntelligenceCVE-2026-0400

CVE-2026-0400

MEDIUM4.9

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

Published Feb 24, 2026

Modified 1 weeks ago

Details

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

References

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

https://www.cve.org/CVERecord?id=CVE-2026-0400

CVSS Analysis

CVSS v3.1

4.9

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

HighPR:H

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

4.9/CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

Input Validation

Format String Vulnerability

Ecosystems

Timeline

PublishedFeb 24, 2026

ModifiedFeb 24, 2026