Medium severity · published Oct 12, 2026
CVE-2026-21121
Improper handling of insufficient permission in CmcCore prior to SMR Oct-2026 Release 1 allows local attackers to use the privileged APIs
6.9
CVSS
0.1%
EPSS
No
On KEV
Description
Improper handling of insufficient permission in CmcCore prior to SMR Oct-2026 Release 1 allows local attackers to use the privileged APIs.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% 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
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21121
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21121
security.samsungmobile.com
https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=10
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