CVE-2026-21126: Input Validation
Published Oct 12, 2026
·Updated
Improper input validation in getting cover image in libsimba.heifdec.media.samsung.so prior to SMR Oct-2026 Release 1 allows local attackers to write out-of-bounds memory.
Affected Software
1 affected component
Samsung libsimba.heifdec.media.samsung.so<SMR Oct-2026 Release 1
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch SMR Oct-2026 Release 1
Event History
Oct 12, 2026
CVE Published
via MITRE·04:57 AM
Data Sourced
via MITRE·04:57 AM
DescriptionWeakness
Data Sourced
via NVD·05:17 AM
DescriptionSeverity
Frequently Asked Questions
1
What level of access would an attacker need?
Exploitation requires local attacker access to the affected device or environment.
2
Which installations are affected?
Installations using libsimba.heifdec.media.samsung.so are affected if they are running a version prior to SMR Oct-2026 Release 1.
3
What is the remediation?
Update to SMR Oct-2026 Release 1 or a later release that includes the fix.