Unrated severityOSV Advisory· Published Jan 10, 2026· Updated Jan 12, 2026

Apache Mynewt NimBLE: Out-of-Bounds Write Vulnerability in NimBLE HCI H4 driver

CVE-2025-53470

Description

Out-of-bounds Read vulnerability in Apache NimBLE HCI H4 driver. Specially crafted HCI event could lead to invalid memory read in H4 driver.

This issue affects Apache NimBLE: through 1.8.

This issue requires a broken or bogus Bluetooth controller and thus severity is considered low.

Users are recommended to upgrade to version 1.9, which fixes the issue.

Apache/Mynewt NimbleOSV
Range: nimble_1_5_0_rc1_tag, nimble_1_5_0_tag, nimble_1_6_0_rc1_tag, …
Apache/NimBLEllm-create
Range: <=1.8

No patches discovered yet.

AI mechanics synthesis has not run for this CVE yet.

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