Vulnerability Database

322,388

Total vulnerabilities in the database

CVE-2020-16843

In Firecracker 0.20.x before 0.20.1 and 0.21.x before 0.21.2, the network stack can freeze under heavy ingress traffic. This can result in a denial of service on the microVM when it is configured with a single network interface, and an availability problem for the microVM network interface on which the issue is triggered.

  • Published: Aug 4, 2020
  • Updated: Nov 16, 2025
  • CVE: CVE-2020-16843
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.9
  • AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:M/Au:N/C:N/I:N/A:P

No CWE or OWASP classifications available.

Software From Fixed in
amazon / firecracker 0.21.0 0.21.0.x
amazon / firecracker 0.21.1 0.21.1.x
amazon / firecracker 0.20.0 0.20.0.x