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CVE-2021-20040

HIGHCVSS 7.5/10EPSS 25.78%

Last modified

CVE-2021-20040 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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 estimates a 25.78% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability
25.78%

97.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
SonicwallSma 200 Firmware10.2.0.8-37sv
SonicwallSma 200 Firmware10.2.1.1-19sv
SonicwallSma 210 Firmware10.2.0.8-37sv
SonicwallSma 210 Firmware10.2.1.1-19sv
SonicwallSma 410 Firmware10.2.0.8-37sv
SonicwallSma 410 Firmware10.2.1.1-19sv
SonicwallSma 400 Firmware10.2.0.8-37sv
SonicwallSma 400 Firmware10.2.1.1-19sv
SonicwallSma 500v Firmware10.2.0.8-37sv
SonicwallSma 500v Firmware10.2.1.1-19sv

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2021-20040?
CVE-2021-20040 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 25.78% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20040?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-20040?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST