Low severity3.1OSV Advisory· Published Jan 10, 2026· Updated Jun 17, 2026

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.

LLM-synthesized narrative grounded in this CVE's description and references.

Apache/Mynewt NimbleOSV
Range: nimble_1_5_0_rc1_tag, nimble_1_5_0_tag, nimble_1_6_0_rc1_tag, …
Apache/NimBLE2 versions
cpe:2.3:a:apache:nimble:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:apache:nimble:*:*:*:*:*:*:*:*range: <1.9.0
- (no CPE)range: <=1.8
Apache/NimBLE HCI H4 driverllm-create
Range: <=1.8

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