CVE-2023-21473

Improper input validation with Exynos Fastboot USB Interface prior to SMR Apr-2023 Release 1 allows a physical attacker to execute arbitrary code in bootloader

Medium · published September 3, 2025

CVSS v3.1
6.8
EPSS
0%
Percentile
12.5
In the wild
Unconfirmed
What it is

Improper input validation with Exynos Fastboot USB Interface prior to SMR Apr-2023 Release 1 allows a physical attacker to execute arbitrary code in bootloader.

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00226 · 12.5th percentile
Published
2025-09-03T05:17Z
EPSS history
Timeline
  • 03 SEP 05:17Z
    Improper input validation with Exynos Fastboot USB Interface prior to SMR Apr-2023 Release 1 allows a physical attacker to execute arbitrary code in bootloader
    cvelistv5