https://seclists.org/oss-sec/2026/q1/41: CVE-2025-53477: Apache NimBLE: NULL Pointer Defence in NimBLE host HCI layer

Published Jan 8, 2026
·
Updated

Affected Software

1 affected component
Apache NimBLE<=1.8.0
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Frequently Asked Questions

1

What is the severity of CVE-2025-53477?

The severity of CVE-2025-53477 is classified as low.

2

What versions of Apache NimBLE are affected by CVE-2025-53477?

Apache NimBLE versions through 1.8.0 are affected by CVE-2025-53477.

3

What does CVE-2025-53477 vulnerability entail?

CVE-2025-53477 is a NULL pointer dereference vulnerability due to missing validation in the HCI layer.

4

How can I fix CVE-2025-53477?

Fixing CVE-2025-53477 involves upgrading Apache NimBLE to a version beyond 1.8.0.

5

What conditions exacerbate the effects of CVE-2025-53477?

The effects of CVE-2025-53477 are exacerbated when asserts are disabled and invalid HCI commands are present.

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