Description

Improper privilege management in Locksettings prior to SMR Oct-2026 Release 1 allows local privileged attackers with root privilege to access data of the tied profile in before first unlock.

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EPSS — Exploit Prediction

0.0014

Probability of exploitation

0.03%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=10

Frequently Asked Questions

What is CVE-2026-21123? +

Improper privilege management in Locksettings prior to SMR Oct-2026 Release 1 allows local privileged attackers with root privilege to access data of the tied profile in before first unlock.

How do I check if I'm vulnerable to CVE-2026-21123? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.