CVE-2026-21068

Stack-based buffer overflow in libril_sem.so prior to SMR Aug-2026 Release 1 allows privileged local attackers to execute arbitrary code.

CVSS 4.0

8.4CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-25)

CWE

CWE-121

Published

2026-08-10

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

Affected

• samsung:android

References

• https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=08

Check your stackJSON