Vulnerability in SonicWall Sma 200

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 condition. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.066 (93.6th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-20041: held from 0.068 to 0.066.

EPSS over last 30 days · oldest: 0.068 · newest: 0.066 · change: -0.002

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-20041?
CVE-2021-20041 is a high-severity vulnerability in SonicWall Sma 200, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2021-12-08.
How severe is CVE-2021-20041?
High severity. CVSS v3 base score is 7.5 out of 10.