CVE-2025-53477

Name: CVE-2025-53477
Creator: NVD / NIST
Published: 2026-01-10T10:15:50.66+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2025-53477 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.70%

48.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Apache	Nimble	< 1.9.0

References

https://github.com/apache/mynewt-nimble/commit/0caf9baeb271ede85fcc5237ab87ddbf938600daPatch
https://github.com/apache/mynewt-nimble/commit/3160b8c4c7ff8db4e0f9badcdf7df684b151e077Patch
https://lists.apache.org/thread/1dxthc132hwm2tzvjblrtnschcsbw2voMailing List, Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/01/08/3Mailing List, Third Party Advisory

Timeline

Published: Jan 10, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-53477?

How severe is CVE-2025-53477?

CVE-2025-53477 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2025-53477?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-53477?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST