CVE Watch—

CVE-2020-5135

SonicWall SonicOS Buffer Overflow Vulnerability

CVSS

—

No CVSS

EPSS

26.9%

p98

KEV

YES

Mar 15, 2022

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

26.9%EPSS · 30 days26.9%

2026-06-302026-07-16

KEV catalog record

Product

SonicWall / SonicOS

Vulnerability

SonicWall SonicOS Buffer Overflow Vulnerability

Added to KEV

Mar 15, 2022

Remediate by

Apr 5, 2022

Known ransomware use

Summary description

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.

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2020-5135

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