CVE-2023-21473 | BDVDB-2026-292004 Detail

SamsungSamsung Mobile Devices

Description#

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: physical.

Weaknesses#

CWE-20 Improper Input Validation

References#

https://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=04

Exploit#

No public exploit known

History#

Version 12025-09-03Record published in the CVE List.

Published

Published: 2025-09-03
Last modified: 2025-09-03

Vendor information

Vendor: Samsung
Product: Samsung Mobile Devices

All Samsung vulnerabilities

Score

6.8 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 13.3.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Improper Input Validation

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
Not stated
Fixed
SMR Apr-2023 Release in Selected Android 11, 12, 13 Exynos devices

Scoring System

CVSS v4.0

Not available

CVSS v3.1

6.8 Medium

CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H

Metric breakdown
Attack Vector	Physical
Attack Complexity	High
Privileges Required	High
User Interaction	Required
Scope	Changed
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).