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CVE-2021-20043

HIGHCVSS 8.8/10EPSS 23.26%

Last modified

CVE-2021-20043 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A Heap-based buffer overflow vulnerability in SonicWall SMA100 getBookmarks method allows a remote authenticated attacker to potentially execute code as the nobody user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.. EPSS estimates a 23.26% chance of exploitation in the next 30 days.

Description

A Heap-based buffer overflow vulnerability in SonicWall SMA100 getBookmarks method allows a remote authenticated attacker to potentially execute code as the nobody user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.

Metrics

CVSS 3.1
8.8/10

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

EPSS Probability
23.26%

97.5th 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-2021-20043?
A Heap-based buffer overflow vulnerability in SonicWall SMA100 getBookmarks method allows a remote authenticated attacker to potentially execute code as the nobody user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.
How severe is CVE-2021-20043?
CVE-2021-20043 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 23.26% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20043?
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-2021-20043?

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

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Source: NVD / NIST