CVE-2026-21031 | BDVDB-2026-338233 Detail

SamsungSamsung Mobile Devices

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.

Impact#

Per CVSS v4.0: confidentiality impact high, integrity impact low, availability impact low. Attack vector: local.

Weaknesses#

CWE-285 Improper Authorization

References#

https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=06

Exploit#

No public exploit known

History#

Version 12026-06-05Record published in the CVE List.

Published

Published: 2026-06-05
Last modified: 2026-06-05

Vendor information

Vendor: Samsung
Product: Samsung Mobile Devices

All Samsung vulnerabilities

Score

5.2 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 0.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
Not stated
Fixed
SMR Jun-2026 Release in Android 15, 16

Scoring System

CVSS v4.0

5.2 Medium

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Attack Requirements	None
Privileges Required	Low
User Interaction	Passive
Vulnerable System Confidentiality	High
Vulnerable System Integrity	Low
Vulnerable System Availability	Low
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).