Sonicos
CVE-2026-3439
MEDIUM
Severity by source
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
Lifecycle Timeline
2DescriptionCVE.org
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. No patch is currently available.
Technical ContextAI
Classified as CWE-121 (Stack-based Buffer Overflow). Affects Sonicos. A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall.
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.
SonicWall SonicOS SSLVPN contains an authentication bypass vulnerability allowing remote attackers to bypass authenticat
RADIUS Protocol under RFC 2865 is susceptible to forgery attacks by a local attacker who can modify any valid Response (
Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). Rated critical severity (CVSS 9.8), this v
Wind River VxWorks 6.6 through vx7 has Session Fixation in the TCP component. Rated high severity (CVSS 7.5), this vulne
A Host Header Redirection vulnerability in SonicOS potentially allows a remote attacker to redirect firewall management
An improper access control vulnerability has been identified in the SonicWall SonicOS management access, potentially lea
An improper authentication vulnerability has been identified in SonicWall SonicOS SSL-VPN feature, which in specific con
A Stack-based buffer overflow vulnerability in the SonicOS via HTTP request allows a remote unauthenticated attacker to
A buffer overflow vulnerability in SonicOS allows a remote attacker to cause Denial of Service (DoS) and potentially exe
Wind River VxWorks 6.7 though 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 3 of 4). Rated critical seve
Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 2 of 4). Rated critical severity (CVSS
Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the IPv4 component. Rated critical severity (CVSS 9.8), this vul
Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today