CVE-2025-53477

EUVD-2026-1853
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA-ADPADP
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 64%
Affected Products (NVD)
VendorProductVersion
apachenimble
𝑥
< 1.9.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/apache/mynewt-nimble/commit/0caf9baeb271ede85fcc5237ab87ddbf938600da
https://github.com/apache/mynewt-nimble/commit/3160b8c4c7ff8db4e0f9badcdf7df684b151e077
https://lists.apache.org/thread/1dxthc132hwm2tzvjblrtnschcsbw2vo
http://www.openwall.com/lists/oss-security/2026/01/08/3