CVE-2021-20043

high-risk
Published 2021-12-08

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.

Do I need to act?

~
4.9% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (10)

Affected Vendors

Sonicwall

References (2)

Vendor Advisory https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026
Vendor Advisory https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026
54
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 8/34 · Low
Exposure 16/34 · Moderate