Description
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.
Published: 2026-07-24
Score: 7.5 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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History

Fri, 24 Jul 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache nimble
Vendors & Products Apache
Apache nimble

Fri, 24 Jul 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 24 Jul 2026 18:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Apache NimBLE: Buffer overflow in socket HCI transport
Weaknesses CWE-120
References

cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-07-24T18:14:45.702Z

Reserved: 2026-05-13T08:48:46.370Z

Link: CVE-2026-45811

cve-icon Vulnrichment

Updated: 2026-07-24T14:34:43.034Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-24T20:30:14Z

Weaknesses