CVE-2026-21111

MEDIUM CVSS 4.0: 6.9 EPSS 0.10%
Updated Sep 10, 2026
Out-of-bounds
Parameter Value
CVSS 6.9 (MEDIUM)
Type CWE-787 (Out-of-bounds Write)
Vendor Out-of-bounds
Public PoC No

Out-of-bounds write in libsthmbc.so prior to One UI 8.5 allows local attackers to write out-of-bounds memory.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption

CVSS Vector v4.0

Weakness Type (CWE)