Out-of-bounds Read in Zephyrproject Zephyr
CVE-2026-11743
The SF32LB MPI QSPI NOR flash driver (drivers/flash/flash_sf32lb_mpi_qspi_nor.c) validated the flash offset and length on its read and write paths with the test (offset + size) > data->size. Because offset is a signed off_t while size is u…
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L.
Affected products
- Zephyrproject Zephyr — versions 4.3.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-11743?
- CVE-2026-11743 is a medium-severity vulnerability in Zephyrproject Zephyr, classified under Out-of-bounds Read. CVSS score: 6.6/10. Published 2026-08-07.
- How severe is CVE-2026-11743?
- Medium severity. CVSS v3 base score is 6.6 out of 10.