Low severity · published Jan 10, 2026
CVE-2025-53470
Apache Mynewt NimBLE: Out-of-Bounds Write Vulnerability in NimBLE HCI H4 driver
3.1
CVSS
0.3%
EPSS
No
On KEV
Description
Out-of-bounds Read vulnerability in Apache NimBLE HCI H4 driver. Specially crafted HCI event could lead to invalid memory read in H4 driver.
This issue affects Apache NimBLE: through 1.8.
This issue requires a broken or bogus Bluetooth controller and thus severity is considered low.
Users are recommended to upgrade to version 1.9, which fixes the issue.
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Adjacent
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AM
Apache Mynewt NimBLE · Apache Software Foundation
through 1.8 · source: vendor
NI
Nimble · Apache
before 1.9.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-53470
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-53470
Patch
https://github.com/apache/mynewt-nimble/commit/b973df0c6cf7b30efbf8eb2cafdc1ee843464b76
Mailing List
https://lists.apache.org/thread/32sm0944dyod4sdql77stgyw9xb2msc0
Mailing List
http://www.openwall.com/lists/oss-security/2026/01/08/2
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