CVE-2026-0849

EUVD-2026-12186
Malformed ATAES132A responses with an oversized length field overflow a 52-byte stack buffer in the Zephyr crypto driver, allowing a compromised device or bus attacker to corrupt kernel memory and potentially hijack execution.
Classic Buffer Overflow
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
3.8 LOW
PHYSICAL
HIGH
LOW
CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
zephyrprojectzephyr
4.3.0
zephyrprojectzephyr
4.3.0:rc1
zephyrprojectzephyr
4.3.0:rc2
zephyrprojectzephyr
4.3.0:rc3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-ff4p-3ggg-prp6
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-ff4p-3ggg-prp6