CVE-2026-21031

EUVD-2026-34803
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
samsungandroid
15.0
samsungandroid
15.0:smr-apr-2025-r1
samsungandroid
15.0:smr-apr-2026-r1
samsungandroid
15.0:smr-aug-2025-r1
samsungandroid
15.0:smr-dec-2025-r1
samsungandroid
15.0:smr-feb-2025-r1
samsungandroid
15.0:smr-feb-2026-r1
samsungandroid
15.0:smr-jan-2025-r1
samsungandroid
15.0:smr-jan-2026-r1
samsungandroid
15.0:smr-jul-2025-r1
samsungandroid
15.0:smr-jun-2025-r1
samsungandroid
15.0:smr-mar-2025-r1
samsungandroid
15.0:smr-mar-2026-r1
samsungandroid
15.0:smr-may-2025-r1
samsungandroid
15.0:smr-may-2026-r1
samsungandroid
15.0:smr-nov-2025-r1
samsungandroid
15.0:smr-oct-2025-r1
samsungandroid
15.0:smr-sep-2025-r1
samsungandroid
16.0
samsungandroid
16.0:smr-apr-2026-r1
samsungandroid
16.0:smr-aug-2025-r1
samsungandroid
16.0:smr-dec-2025-r1
samsungandroid
16.0:smr-feb-2026-r1
samsungandroid
16.0:smr-jan-2026-r1
samsungandroid
16.0:smr-mar-2026-r1
samsungandroid
16.0:smr-may-2026-r1
samsungandroid
16.0:smr-nov-2025-r1
samsungandroid
16.0:smr-oct-2025-r1
samsungandroid
16.0:smr-sep-2025-r1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=06