High severity · published Jun 5, 2026
CVE-2026-21031
Improper authorization in AppBlock prior to SMR Jun-2026 Release 1 allows local attacker to launch arbitrary activity
7.8
CVSS
0.1%
EPSS
No
On KEV
Description
Improper authorization in AppBlock prior to SMR Jun-2026 Release 1 allows local attacker to launch arbitrary activity. User interaction is required for triggering this vulnerability.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
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
AN
Android · Samsung
15.0; 15.0; 15.0; 15.0; 15.0; 15.0; +23 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21031
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21031
Vendor Advisory
https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=06
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