Medium severity · published Mar 16, 2026
CVE-2026-21004
Improper authentication in Smart Switch prior to version 3.7.69.15 allows adjacent attackers to trigger a denial of service
6.5
CVSS
0.2%
EPSS
No
On KEV
Description
Improper authentication in Smart Switch prior to version 3.7.69.15 allows adjacent attackers to trigger a denial of service.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
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
SS
Smart Switch · Samsung
before 3.7.69.15 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21004
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21004
Vendor Advisory
https://security.samsungmobile.com/serviceWeb.smsb?year=2026&month=03
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