CVE-2025-20939

Published: Apr 8, 2025Modified: Jan 27, 2026

5.4

Vector

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

Exploitability: 0.7 / Impact: 4.7

Source: mobile.security@samsung.com (Secondary)

Description

Improper authorization in wireless download protocol in Galaxy Watch prior to SMR Apr-2025 Release 1 allows physical attackers to update device unique identifier of Watch devices.

Affected (1)

Products: Samsung: Wear Os

Samsung

1 product

Wear Os

Configuration A

1 vulnerable · 10 platform

Vulnerable Software	Affected Versions
Samsung Wear Os	Version 5.0

Running on/with	Platform Versions
Samsung Galaxy Watch	All versions
Samsung Galaxy Watch 4	All versions
Samsung Galaxy Watch 4 Classic	All versions
Samsung Galaxy Watch 5	All versions
Samsung Galaxy Watch 5 Pro	All versions
Samsung Galaxy Watch 6	All versions
Samsung Galaxy Watch 6 Classic	All versions
Samsung Galaxy Watch 7	All versions
Samsung Galaxy Watch Fe	All versions
Samsung Galaxy Watch Ultra	All versions

References (1)

https://security.samsungmobile.com/securityUpdate.smsb?year=2025&month=04

Source: mobile.security@samsung.com

Vendor Advisory

Timeline

No history available yet.