Back to Database
Status published
High
CVE-2021-20041
An unauthenticated and remote adversary can consume all of the...
Vulnerability Description
An unauthenticated and remote adversary can consume all of the device's CPU due to crafted HTTP requests sent to SMA100 /fileshare/sonicfiles/sonicfiles resulting in a loop with unreachable exit condition. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-20041
Credits & Attribution
No credits recorded in the NVD database.
More from SonicWall
View All →CVE-2025-40605
A Path Traversal vulnerability has been identified in the Email...
Unknown
0
CVE-2025-40604
Download of Code Without Integrity Check Vulnerability in the SonicWall...
Unknown
0
CVE-2025-40603
A potential exposure of sensitive information in log files in...
Unknown
0
CVE-2025-40602
A local privilege escalation vulnerability due to insufficient authorization in...
Unknown
0
CVE-2025-40601
A Stack-based buffer overflow vulnerability in the SonicOS SSLVPN service...
Unknown
0
Affected Vendor
SonicWall
View all reports →Affected Software
SonicWall SMA100
Vulnerable Versions:
9.0.0.11-31sv and earlier, 10.2.0.8-37sv and earlier, 10.2.1.1-19sv and earlier, 10.2.1.2-24sv and earlier
Timeline
Official Publish:
December 8th, 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