CVE-2026-3439 - Vulnerability Details - OpenCVE

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

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.0003.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

SonicWall

SonicOS

unknown

Version	Status	Constraints
`7.0.1-5169 and older versions`	affected	—
`7.3.1-7013 and older versions`	affected	—
`8.1.0-8017 and older versions`	affected	—

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

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

History

Wed, 04 Mar 2026 16:15:00 +0000

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 04 Mar 2026 09:30:00 +0000

Type	Values Removed	Values Added
Description		A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall.
Weaknesses		CWE-121
References		https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0001

Projects

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MITRE

Status: PUBLISHED

Assigner: sonicwall

Published: 2026-03-04T09:19:45.392Z

Updated: 2026-03-04T16:05:54.854Z

Reserved: 2026-03-02T13:59:15.773Z

Link: CVE-2026-3439

Vulnrichment

Updated: 2026-03-04T16:04:59.052Z

NVD

Status : Received

Published: 2026-03-04T10:16:08.150

Modified: 2026-03-04T16:16:30.223

Link: CVE-2026-3439

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-121

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