CVE-2026-21068
published 2026-08-10CVE-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.
PriorityP342high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.17%
5.9th percentile
Stack-based buffer overflow in libril_sem.so prior to SMR Aug-2026 Release 1 allows privileged local attackers to execute arbitrary code.
Affected
91 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
| samsung | android | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv4.08.4HIGHCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
VulDB
Samsung Devices libril_sem.so stack-based overflow
vuldb·2026-08-22·CVSS 7.8
CVE-2026-21068 [HIGH] Samsung Devices libril_sem.so stack-based overflow
A vulnerability was found in Samsung Devices. It has been declared as problematic. This issue affects some unknown processing of the file libril_sem.so. Executing a manipulation can lead to stack-based buffer overflow.
This vulnerability appears as CVE-2026-21068. The attack requires local access. There is no available exploit.
GHSA
Stack-based buffer overflow in libril_sem.so prior to SMR Aug-2026 Release 1 allows privileged local attackers to execute arbitrary code.
ghsa_unreviewed·2026-08-10
CVE-2026-21068 [HIGH] CWE-121 Stack-based buffer overflow in libril_sem.so prior to SMR Aug-2026 Release 1 allows privileged local attackers to execute arbitrary code.
Stack-based buffer overflow in libril_sem.so prior to SMR Aug-2026 Release 1 allows privileged local attackers to execute arbitrary code.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-08-10
Published