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Sonicos CVE-2026-0399

MEDIUM
Stack-based Buffer Overflow (CWE-121)
2026-02-24 PSIRT@sonicwall.com
4.9
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
4.9 MEDIUM
AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Feb 24, 2026 - 15:21 nvd
MEDIUM 4.9

DescriptionCVE.org

Multiple post-authentication stack-based buffer overflow vulnerabilities in the SonicOS management interface due to improper bounds checking in a API endpoint.

AnalysisAI

SonicOS management interface suffers from stack-based buffer overflow flaws in an API endpoint that allow authenticated administrators to trigger denial of service conditions through improper input validation. The vulnerability affects Stack Overflow and Sonicos products but currently lacks an available patch, leaving deployed systems exposed to authenticated attack vectors with no mitigation path.

Technical ContextAI

Classified as CWE-121 (Stack-based Buffer Overflow). Affects the SonicOS management component of Sonicos. Multiple post-authentication stack-based buffer overflow vulnerabilities in the SonicOS management interface due to improper bounds checking in a API endpoint.

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.

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CVE-2026-0399 vulnerability details – vuln.today

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