Stack-Based Buffer Overflow Vulnerability in SonicOS by SonicWall
CVE-2026-0399

4.9MEDIUM

Key Information:

Vendor

Sonicwall
Status
Sonicos
Vendor
CVE Published:
24 February 2026

What is CVE-2026-0399?

Multiple vulnerabilities exist within the SonicOS management interface that may allow an attacker to exploit stack-based buffer overflow issues. These vulnerabilities stem from inadequate bounds checking when processing requests through an API endpoint, potentially leading to execution of arbitrary code and unauthorized access.

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Affected Version(s)

SonicOS Linux 7.0.1-5169 and older versions

SonicOS Linux 7.3.1-7013 and older versions

SonicOS Linux 8.1.0-8017 and older versions

References

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-202...
vendor-advisory

CVSS V3.1

Score:
4.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Vang3lis, Heuzoo and Moyushui of VARAS@IIE
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