Buffer overflow in Apache NimBLE - CVE-2026-45811
Published: August 24, 2026
Vulnerability identifier: #VU144747
CSH Severity: Low
CVSS v4: 2.3 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-45811
CWE-ID: CWE-120
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to classic buffer overflow in HCI socket transport when processing a received HCI event. A remote attacker can send a specially crafted HCI event to cause a denial of service.
Exploitation requires either a misconfigured event pool size or a malicious or compromised controller on the other end of the HCI socket link, and does not occur over-the-air Bluetooth access.
Affected software
Apache NimBLE
How to mitigate CVE-2026-45811
Install security update from vendor's website.
Apache NimBLE - update to 1.10.0