CVE-2026-0849 — LOW (3.8) — White Hats Nepal

Vulnerability 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 Score

3.8

LOW

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

Attack Vector

PHYSICAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

LOW

Affected Products

Vendor	Product	Versions
Zephyrproject	Zephyr	4.3.0

Related Weaknesses (CWE)

CWE-120

References

https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-ff4p-3ggg-ExploitPatchVendor Advisory
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-ff4p-3ggg-ExploitPatchVendor Advisory

FAQ

What is CVE-2026-0849?

CVE-2026-0849 is a vulnerability with a CVSS score of 3.8 (LOW). 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 pot...

How severe is CVE-2026-0849?

CVE-2026-0849 has been rated LOW with a CVSS base score of 3.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-0849?

Check the references section above for vendor advisories and patch information. Affected products include: Zephyrproject Zephyr.