CVE-2025-53477

High

Description

NULL Pointer Dereference vulnerability in Apache Nimble. Missing validation of HCI connection complete or HCI command TX buffer could lead to NULL pointer dereference. This issue requires disabled asserts and broken or bogus Bluetooth controller and thus severity is considered low. This issue affects Apache NimBLE: through 1.8.0. Users are recommended to upgrade to version 1.9.0, which fixes the issue.

SeverityHigh

CVSS7.5

Exploit probability—

Product

Apache Nimble

PublishedJan 10, 2026

First seenJan 10, 2026

Weakness typeCWE-476NULL pointer dereference

How to fix

Update

apache nimble1.9.0 or later

Patches

Vendor advisories

lists.apache.org/thread/1dxthc132hwm2tzvjblrtnschcsbw2vo

Affected products

Product	Affected versions	Fixed in
apache nimble	v < 1.9.0	1.9.0

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