Medium severity · published Mar 14, 2026
CVE-2026-0849
crypto: ATAES132A response length allows stack buffer overflow
6.8
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Physical
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZE
Zephyr · zephyrproject-rtos
before 4.4.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-0849
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-0849
Exploit
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-ff4p-3ggg-prp6
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