Sonicos CVE-2026-3439
MEDIUM
Stack-based Buffer Overflow (CWE-121)
2026-03-04
PSIRT@sonicwall.com
4.9
CVSS 3.1
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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 - 22:05 vuln.today
CVE Published
Mar 04, 2026 - 10:16 nvd
MEDIUM 4.9
DescriptionNVD
A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall.
AnalysisAI
Authenticated users can trigger a stack-based buffer overflow in SonicOS certificate handling to cause denial of service against Sonicos firewalls. The vulnerability requires administrative privileges to exploit and results in firewall crashes rather than code execution. …
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RemediationAI
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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External POC / Exploit Code
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Destination URL
POC code from unknown sources may be malicious, contain backdoors, or be fake.
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Verify the source reputation and cross-reference with known databases (Exploit-DB, GitHub Security).