CVE-2026-3439
Received
Received - Intake
Stack-Based Buffer Overflow in SonicOS Certificate Handling Causes Firewall Crash
Publication date: 2026-03-04
Last updated on: 2026-03-05
Assigner: SonicWALL, Inc.
Description
Description
A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| sonicwall | sonicos | to 7.3.2-7010 (exc) |
| sonicwall | sonicos | to 8.2.0-8009 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-121 | A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). |
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?
I don't know
Can you explain this vulnerability to me?
This vulnerability is a post-authentication stack-based buffer overflow in the SonicOS certificate handling component. It allows a remote attacker, who has already authenticated, to exploit the flaw to cause a crash of the firewall.
How can this vulnerability impact me? :
The vulnerability can impact you by allowing a remote attacker to crash your firewall, potentially causing a denial of service and disrupting network security and availability.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
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How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
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