PT-2025-35666 · Samsung · Exynos Fastboot Usb Interface

Published 2025-09-03 · Updated 2025-09-05 · CVE-2023-21473

Positive Technologies (AI Summary)

CVSS v3.1

6.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Exynos Fastboot USB Interface versions prior to SMR Apr-2023 Release 1

Description The Exynos Fastboot USB Interface is susceptible to improper input validation. This allows a physical attacker to execute arbitrary code in the bootloader.

Recommendations Update to SMR Apr-2023 Release 1 or later.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2023-21473

Affected Products

Exynos Fastboot Usb Interface

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2023-21473 · Security Note
• https://osv.dev/vulnerability/CVE-2023-21473 · Vendor Advisory
• https://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=04 · Vendor Advisory
• https://twitter.com/VulmonFeeds/status/1963256869662654913 · Twitter Post
• https://twitter.com/CVEnew/status/1963112919841030243 · Twitter Post
• https://t.me/cveNotify/134460 · Telegram Post