CVE-2026-45811

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in Apache NimBLE. The HCI socket transport did not check whether a received HCI event would fit the configured event pool before copying it, allowing a buffer overflow. Severity is low: exploitation requires either a misconfigured pool size or a malicious/compromised controller on the other end of the HCI socket link, not over-the-air Bluetooth access. This issue affects Apache NimBLE: through 1.9.0. Users are recommended to upgrade to version 1.10.0, which fixes the issue.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/apache/mynewt-nimble/commit/dcc4e4f026109eecd507de9479bb5019306a4a41	Patch
https://lists.apache.org/thread/5mkz68y1py0o6zmxtc3l1o8grtrb78m0	Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/07/24/11	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:nimble:*:*:*:*:*:*:*:*

History

24 Oct 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) Vulnerabilidad de copia de búfer sin verificar el tamaño de la entrada (’Desbordamiento de búfer clásico’) en Apache NimBLE. El transporte de socket HCI no verificaba si un evento HCI recibido cabría en el grupo de eventos configurado antes de copiarlo, permitiendo un desbordamiento de búfer. La severidad es baja: la explotación requiere un tamaño de grupo mal configurado o un controlador malicioso/comprometido en el otro extremo del enlace de socket HCI, no acceso Bluetooth por aire. Este problema afecta a Apache NimBLE: hasta la versión 1.9.0. Se recomienda a los usuarios actualizar a la versión 1.10.0, que soluciona el problema.

Information

Published : 2026-07-24 13:18

Updated : 2026-10-24 13:10

NVD link : CVE-2026-45811

Mitre link : CVE-2026-45811

CVE.ORG link : CVE-2026-45811

JSON object : View

Products Affected

apache

nimble

CWE

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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