VULNERABILITY INTELLIGENCE

CVE-2021-20041

CVSS score7.5 HIGH
EPSS probability21.20%
CISA KEVNot currently listed
Published2021-12-08
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

An unauthenticated and remote adversary can consume all of the device's CPU due to crafted HTTP requests sent to SMA100 /fileshare/sonicfiles/sonicfiles resulting in a loop with unreachable exit condition. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.

Weakness classification

  • PSIRT@sonicwall.com: CWE-835
  • nvd@nist.gov: CWE-835

Primary references