PT-2026-64279 · Apache · Apache Nimble

CVE-2026-45811 · Published 2026-07-24 · Updated 2026-07-24

NVD

CVSS v3.1

7.5

High

Base vector

AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2026-45811

Affected Products

Apache Nimble

References · 4

• https://github.com/apache/mynewt-nimble/commit/dcc4e4f026109eecd507de9479bb5019306a4a41 · Patch
• https://lists.apache.org/thread/5mkz68y1py0o6zmxtc3l1o8grtrb78m0 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-45811 · Security Note
• http://openwall.com/lists/oss-security/2026/07/24/11 · Note