CVE-2026-21087: High severity Google libmdnie.so vulnerability
Published Sep 9, 2026
·Updated
Out-of-bounds write in libmdnie.so prior to SMR Sep-2026 Release 1 allows local attackers to execute arbitrary code with system server privilege.
Affected Software
37 affected components
Google libmdnie.so<SMR Sep-2026 Release 1
Samsung Android=15.0
Samsung Android=15.0-smr-apr-2025-r1
Samsung Android=15.0-smr-apr-2026-r1
Samsung Android=15.0-smr-aug-2025-r1
Samsung Android=15.0-smr-aug-2026-r1
Samsung Android=15.0-smr-dec-2025-r1
Samsung Android=15.0-smr-feb-2025-r1
Samsung Android=15.0-smr-feb-2026-r1
Samsung Android=15.0-smr-jan-2025-r1
Samsung Android=15.0-smr-jan-2026-r1
Samsung Android=15.0-smr-jul-2025-r1
Samsung Android=15.0-smr-jul-2026-r1
Samsung Android=15.0-smr-jun-2025-r1
Samsung Android=15.0-smr-jun-2026-r1
Samsung Android=15.0-smr-mar-2025-r1
Samsung Android=15.0-smr-mar-2026-r1
Samsung Android=15.0-smr-may-2025-r1
Samsung Android=15.0-smr-may-2026-r1
Samsung Android=15.0-smr-nov-2025-r1
Samsung Android=15.0-smr-oct-2025-r1
Samsung Android=15.0-smr-sep-2025-r1
Samsung Android=16.0
Samsung Android=16.0-smr-apr-2026-r1
Samsung Android=16.0-smr-aug-2025-r1
Samsung Android=16.0-smr-aug-2026-r1
Samsung Android=16.0-smr-dec-2025-r1
Samsung Android=16.0-smr-feb-2026-r1
Samsung Android=16.0-smr-jan-2026-r1
Samsung Android=16.0-smr-jul-2026-r1
Samsung Android=16.0-smr-jun-2026-r1
Samsung Android=16.0-smr-mar-2026-r1
Samsung Android=16.0-smr-may-2026-r1
Samsung Android=16.0-smr-nov-2025-r1
Samsung Android=16.0-smr-oct-2025-r1
Samsung Android=16.0-smr-sep-2025-r1
Samsung Android=17.0
Event History
Sep 9, 2026
CVE Published
via MITRE·04:47 AM
Data Sourced
via MITRE·04:47 AM
DescriptionWeakness
Data Sourced
via NVD·05:17 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
Who can exploit this issue?
A local attacker can exploit it. The provided information does not indicate that remote access alone is sufficient.
2
What level of access could successful exploitation provide?
Successful exploitation can allow arbitrary code execution with system server privilege.
3
Which releases are affected?
libmdnie.so versions prior to SMR Sep-2026 Release 1 are affected.