CVE-2026-0849 — Classic Buffer Overflow in Zephyr

CWE-120 — Classic Buffer Overflow3 documents3 sources
Severity
6.8MEDIUMNVD
CNA3.8
EPSS
0.0%
top 94.21%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Zephyrproject-rtos ZephyrZephyrproject Zephyr
Timeline
Latest updateMar 14
PublishedMar 16

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:HExploitability: 0.9 | Impact: 5.9

Affected Packages2 packages

▶CVEListV5zephyrproject-rtos/zephyr* — 4.3

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

1
CVEList
crypto: ATAES132A response length allows stack buffer overflow↗2026-03-14
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🕵️Threat Intelligence

1
Wiz
CVE-2026-0849 Impact, Exploitability, and Mitigation Steps | Wiz↗
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CVE-2026-0849 — Classic Buffer Overflow in Zephyr | cvebase