CVE-2020-5135Used in ransomware
SonicWall SonicOS
SonicWall SonicOS Buffer Overflow Vulnerability
What it is
A buffer overflow vulnerability in SonicOS allows a remote attacker to cause Denial of Service (DoS) and potentially execute arbitrary code by sending a malicious request to the firewall.
What to do
Apply updates per vendor instructions.
Vendor notices and references
Description and required action as published by CISA. Full record at NVD.
Other SonicWall entries on the list
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- SMA1000 Appliances SonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability CVE-2026-83548 · Sep 2, 2026
- SMA1000 Appliances SonicWall SMA1000 Appliances Code Injection Vulnerability CVE-2026-15410 · Jul 14, 2026
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