VULNERABILITY INTELLIGENCE

CVE-2020-27174

CVSS score7.5 HIGH

EPSS probability1.74%

CISA KEVNot currently listed

Published2020-10-16

Last modified2026-06-17

Description

In Amazon AWS Firecracker before 0.21.3, and 0.22.x before 0.22.1, the serial console buffer can grow its memory usage without limit when data is sent to the standard input. This can result in a memory leak on the microVM emulation thread, possibly occupying more memory than intended on the host.