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Status published
High
CVE-2021-20027
A buffer overflow vulnerability in SonicOS allows a remote attacker...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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Affected Vendor
SonicWall
View all reports →Affected Software
SonicOS
Vulnerable Versions:
SonicOS 5.9.1.13 and earlier, SonicOSv 6.5.4.4 and earlier, SonicOS 6.0.5.3 and earlier, SonicOS 6.5.1.12 and earlier, SonicOS 6.5.4.7 and earlier, SonicOS 7.0.1-R1219 and earlier, SonicOS 7.0.1-R514 and earlier, SonicOS 7.0.1-R1262 and earlier
Timeline
Official Publish:
June 14th, 2021
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H