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HIGH · 7.5

CVE-2021-20041

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 condi...

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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
SonicwallSma 200 Firmware9.0.0.11-31sv
SonicwallSma 200-
SonicwallSma 210 Firmware9.0.0.11-31sv
SonicwallSma 210-
SonicwallSma 410 Firmware9.0.0.11-31sv
SonicwallSma 410-
SonicwallSma 400 Firmware9.0.0.11-31sv
SonicwallSma 400-
SonicwallSma 500V Firmware9.0.0.11-31sv
SonicwallSma 500V-

Related Weaknesses (CWE)

CWE-835

References

FAQ

What is CVE-2021-20041?

CVE-2021-20041 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 condi...

How severe is CVE-2021-20041?

CVE-2021-20041 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-20041?

Check the references section above for vendor advisories and patch information. Affected products include: Sonicwall Sma 200 Firmware, Sonicwall Sma 200, Sonicwall Sma 210 Firmware, Sonicwall Sma 210, Sonicwall Sma 410 Firmware.