Critical severity9.8NVD Advisory· Published Dec 8, 2021· Updated Jun 17, 2026
CVE-2021-20042
CVE-2021-20042
Description
An unauthenticated remote attacker can use SMA 100 as an unintended proxy or intermediary undetectable proxy to bypass firewall rules. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.
Affected products
4- SonicWall/SonicWall SMA100v5Range: 9.0.0.11-31sv and earlier
Patches
Vulnerability mechanics
References
1- psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026nvdVendor Advisory
News mentions
0No linked articles in our index yet.