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.

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
.