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

No history.

Information

Published : 2026-07-24 13:18

Updated : 2026-07-27 14:41

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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