Vulnerability · Published Jan 10, 2026 · Assigned by apache
CVE-2025-53477Apache Mynewt NimBLE: NULL Pointer Dereference in NimBLE host HCI layer
High 7.5
In plain English
A high-severity null pointer dereference in Apache Mynewt NimBLE from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Mynewt NimBLE | 0 – through 1.8.0 |
Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/apache/mynewt-nimble/commit/0caf9baeb271ede85fcc5237ab87ddbf938600da patch
- https://github.com/apache/mynewt-nimble/commit/3160b8c4c7ff8db4e0f9badcdf7df684b151e077 patch
- https://lists.apache.org/thread/1dxthc132hwm2tzvjblrtnschcsbw2vo vendor-advisory
- http://www.openwall.com/lists/oss-security/2026/01/08/3