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CVE-2021-20049

HIGHCVSS 7.5/10EPSS 1.35%

Last modified

CVE-2021-20049 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A vulnerability in SonicWall SMA100 password change API allows a remote unauthenticated attacker to perform SMA100 username enumeration based on the server responses. This vulnerability impacts 10.2.1.2-24sv, 10.2.0.8-37sv and earlier 10.x versions.. EPSS estimates a 1.35% chance of exploitation in the next 30 days.

Description

A vulnerability in SonicWall SMA100 password change API allows a remote unauthenticated attacker to perform SMA100 username enumeration based on the server responses. This vulnerability impacts 10.2.1.2-24sv, 10.2.0.8-37sv and earlier 10.x versions.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
1.35%

67.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
SonicwallSma 100 Firmware< 10.0.0.0
SonicwallSma 100 Firmware10.2.0.8-37sv
SonicwallSma 100 Firmware10.2.1.2-24sv
SonicwallSma 200 Firmware< 10.0.0.0
SonicwallSma 200 Firmware10.2.0.8-37sv
SonicwallSma 200 Firmware10.2.1.2-24sv
SonicwallSma 210 Firmware< 10.0.0.0
SonicwallSma 210 Firmware10.2.0.8-37sv
SonicwallSma 210 Firmware10.2.1.2-24sv
SonicwallSma 400 Firmware< 10.0.0.0
SonicwallSma 400 Firmware10.2.0.8-37sv
SonicwallSma 400 Firmware10.2.1.2-24sv
SonicwallSma 410 Firmware< 10.0.0.0
SonicwallSma 410 Firmware10.2.0.8-37sv
SonicwallSma 410 Firmware10.2.1.2-24sv
SonicwallSma 500v Firmware< 10.0.0.0
SonicwallSma 500v Firmware10.2.0.8-37sv
SonicwallSma 500v Firmware10.2.1.2-24sv

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-20049?
A vulnerability in SonicWall SMA100 password change API allows a remote unauthenticated attacker to perform SMA100 username enumeration based on the server responses. This vulnerability impacts 10.2.1.2-24sv, 10.2.0.8-37sv and earlier 10.x versions.
How severe is CVE-2021-20049?
CVE-2021-20049 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.35% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20049?
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-2021-20049?

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

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Source: NVD / NIST