Name: CVE-2026-3439: Stack-based Buffer Overflow
Creator: Rapid7
Published: 2026-03-04T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-3439, CVSS 4.9, EPSS 0.00406

A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall.

CVSS Details

CVSS 3.1 Base Score: 4.9
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Sonicwall Sonicos	—	Update SonicWall SonicOS Gen8 to version 8.2.0-8009 or laterUpdate SonicWall SonicOS Gen7 to version 7.3.2-7010 or later	May 21, 2026	Feb 24, 2026

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CVSS Details

Covered by Rapid7

Prioritise with Active Threat Intelligence