Medium severity · published Apr 8, 2025
CVE-2025-20939
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
5.4
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L
Attack vector
Physical
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SM
Samsung Mobile Devices · Samsung Mobile
All versions, or not specified · source: vendor
WO
Wear OS · Samsung
5.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-20939
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-20939
Vendor Advisory
https://security.samsungmobile.com/securityUpdate.smsb?year=2025&month=04
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