Path Traversal in Sonicwall Sma_200

CVE-2021-20040

A relative path traversal vulnerability in the SMA100 upload funtion allows a remote unauthenticated attacker to upload crafted web pages or files as a 'nobody' user. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.

EPSS: 0.258 (97.7th percentile) — read the EPSS interpretation.

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:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-20040?
CVE-2021-20040 is a high-severity vulnerability in Sonicwall Sma_200, classified under Relative Path Traversal. CVSS score: 7.5/10. Published 2021-12-08.
How severe is CVE-2021-20040?
High severity. CVSS v3 base score is 7.5 out of 10.