CVE-2021-20027

HIGH

Sonicwall Sonicos < 7.0.1-r1262 - Buffer Overflow

Title source: rule
STIX 2.1

Description

A buffer overflow vulnerability in SonicOS allows a remote attacker to cause a Denial of Service (DoS) by sending a specially crafted request. This vulnerability affects SonicOS Gen5, Gen6, Gen7 platforms, and SonicOSv virtual firewalls.

References (1)

Core 1
Core References
Mitigation, Vendor Advisory x_refsource_confirm
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0016

Scores

CVSS v3 7.5
EPSS 0.0043
EPSS Percentile 62.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-120
Status published
Products (1)
sonicwall/sonicos < 7.0.1-r1262
Published Jun 14, 2021
Tracked Since Feb 18, 2026