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SonicWall SonicOS Stack-Based Buffer Overflow Vulnerability in Certificate Handling Allowing Firewall Crash

Vulnerability

A post-authentication stack-based buffer overflow vulnerability has been identified in the certificate handling of SonicWall SonicOS. This vulnerability allows remote attackers to crash affected firewall devices. It impacts multiple Gen7 and Gen8 hardware and virtual firewalls, specifically those running SonicOS versions 7.0.1-5169 and older or 8.1.0-8017 and older.

Impact

Exploitation of this vulnerability leads to a stack-based buffer overflow, causing a crash of the firewall.

Remediation

Users can upgrade to SonicOS versions 7.3.2-7010 or higher for Gen7 firewalls, and 8.2.0-8009 or higher for Gen8 firewalls.

Added: Mar 4, 2026, 10:19 AM
Updated: Mar 4, 2026, 4:25 PM

Vulnerability Rating

Custom Algorithm
spread
6.8
impact
2.5
exploitability
4.4
remediation
7.7
relevance
3.5
threat
0.0
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.