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.
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:H/A:N.
EPSS exploit prediction
EPSS: 0.252 (97.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.258 · newest: 0.252 · change: -0.006
Affected products
- SonicWall Sma 200
- SonicWall Sma 200 Firmware — versions 10.2.0.8-37sv, 10.2.1.1-19sv
- SonicWall Sma 210
- SonicWall Sma 210 Firmware — versions 10.2.0.8-37sv, 10.2.1.1-19sv
- SonicWall Sma 400
- SonicWall Sma 400 Firmware — versions 10.2.0.8-37sv, 10.2.1.1-19sv
- SonicWall Sma 410
- SonicWall Sma 410 Firmware — versions 10.2.0.8-37sv, 10.2.1.1-19sv
- SonicWall Sma 500v
- SonicWall Sma 500v Firmware — versions 10.2.0.8-37sv, 10.2.1.1-19sv
Weakness classification (CWE)
References
- psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026 (Vendor Advisory)
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.