VULNERABILITY INTELLIGENCE

CVE-2021-25471

CVSS score7.5 HIGH

EPSS probability0.40%

CISA KEVNot currently listed

Published2021-10-06

Last modified2026-06-17

Description

A lack of replay attack protection in Security Mode Command process prior to SMR Oct-2021 Release 1 can lead to denial of service on mobile network connection and battery depletion.