Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L L N U L L L 6.3 .0026 17.2 —
AFFECTED Product Versions Fixed Zephyr unspecified —
TIMELINE Apr 5 Reserved by zephyr Jun 4 EXPLOIT PUBLISHED — CVE-2026-5589 (zephyrproject-rtos Zephyr). Public exploit reference added. Jun 4 Published (CNA: zephyr)
An integer underflow in bt_mesh_sol_recv() in the Bluetooth Mesh solicitation handling (subsys/bluetooth/mesh/solicitation.c) leads to an out-of-bounds write. When CONFIG_BT_MESH_OD_PRIV_PROXY_SRV is enabled, the function parses solicitation PDUs from raw BLE advertising payloads. The AD parsing loop reads an attacker-controlled length byte (reported_len) and computes reported_len - 3 without checking that reported_len >= 3. When reported_len is less than 3, the subtraction is performed in signed int arithmetic and yields a negative value that bypasses the length guard and is then implicitly converted to a very large size_t when passed to net_buf_simple_pull_mem(). In builds without assertions, this wraps the buffer length and advances the data pointer far out of bounds, so subsequent reads dereference invalid memory. A nearby BLE device can trigger this with a non-connectable advertisement carrying a UUID16 AD structure and a crafted length byte, with no pairing or prior association required, potentially leading to denial of service or arbitrary code execution.
| Date | Event | Detail |
|---|---|---|
| April 5, 2026 | Reserved | Reserved by zephyr |
| June 4, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-5589 (zephyrproject-rtos Zephyr). Public exploit reference added. |
| June 4, 2026 | Published | Published (CNA: zephyr) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr | — | — | — |
Authoritative record: CVE-2026-5589 at cve.org
Vendors: zephyrproject-rtos
Weaknesses: CWE-787
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-5589 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 Wednesday, August 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.