Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-0849
zephyrproject-rtos Zephyr — crypto: ATAES132A response length allows stack buffer overflow
AV AC PR UI S C I A CVSS EPSS %ile KEV
P L N N U H H H 6.8 .0024 14.6 —
AFFECTED
Product Versions Fixed
Zephyr unspecified —
TIMELINE
Jan 11 Reserved by zephyr
Mar 14 Published (CNA: zephyr)
Oct 15 EXPLOIT PUBLISHED — CVE-2026-0849 (zephyrproject-rtos Zephyr). Public exploit reference added.
Oct 15 RESCORED — CVE-2026-0849 (zephyrproject-rtos Zephyr). CVSS 3.8 → 6.8 (NVD).
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.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| January 11, 2026 | Reserved | Reserved by zephyr |
| March 14, 2026 | Published | Published (CNA: zephyr) |
| October 15, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-0849 (zephyrproject-rtos Zephyr). Public exploit reference added. |
| October 15, 2026 | RESCORED | RESCORED — CVE-2026-0849 (zephyrproject-rtos Zephyr). CVSS 3.8 → 6.8 (NVD). |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| zephyrproject-rtos | Zephyr | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-0849 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
