PT-2026-21747 · Sonicwall · Sonicos

N3Vv + 1 · Published 2026-02-24 · Updated 2026-02-25 · CVE-2026-0401

Positive Technologies (AI Summary)

CVSS v3.1

4.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions SonicOS (affected versions not specified)

Description A post-authentication NULL Pointer Dereference issue exists in SonicOS. This can allow a remote attacker to crash a firewall.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-0401

Affected Products

Sonicos

References · 4

• https://osv.dev/vulnerability/CVE-2026-0401 · Vendor Advisory
• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0001 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-0401 · Security Note
• https://twitter.com/CVEnew/status/2026676465849503820 · Twitter Post