# CVE-2024-51569: Memory corruption in Apache NimBLE

> A missing input validation in Apache NimBLE allows out-of-bounds reads when parsing HCI events, potentially causing crashes or information leaks.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Nov 2024
- **Updated:** 6 Dec 2024
- **Also known as:** GHSA-966f-2c6j-qj89

## What is CVE-2024-51569?

CVE-2024-51569 is a high-severity memory corruption vulnerability in Apache NimBLE, published on 26 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Out-of-bounds Read vulnerability in Apache NimBLE.

Missing proper validation of HCI Number Of Completed Packets could lead to out-of-bound access when parsing HCI event and invalid read from HCI transport memory.
This issue requires broken or bogus Bluetooth controller and thus severity is considered low.
This issue affects Apache NimBLE: through 1.7.0.

Users are recommended to upgrade to version 1.8.0, which fixes the issue.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2024-51569?

It affects 1 product.


Products: Apache Nimble.

## How do I fix CVE-2024-51569?

No fix has been published for CVE-2024-51569 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-51569 being exploited?

There is no known exploitation of CVE-2024-51569 in the wild and no public exploit code.

## Other vulnerabilities in Apache NimBLE

- [CVE-2026-45813](https://insights.sbomify.com/CVE-2026-45813/): Apache NimBLE: Incorrect data validation in BASS add/modify source operation (high 8.8)
- [CVE-2025-62235](https://insights.sbomify.com/CVE-2025-62235/): Apache Mynewt NimBLE: Incorrect handling of SMP Security Request could lead to undesirable pairing (high 8.1)
- [CVE-2026-45811](https://insights.sbomify.com/CVE-2026-45811/): Apache NimBLE: Buffer overflow in socket HCI transport (high 7.5)
- [CVE-2026-45815](https://insights.sbomify.com/CVE-2026-45815/): Apache NimBLE: Remote reachable assertion in ATT Read Multiple Variable Response handler (high 7.5)
- [CVE-2026-45816](https://insights.sbomify.com/CVE-2026-45816/): Apache NimBLE: NULL pointer dereference vulnerability in SMP LTK request (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-51569 and fix it if it is affected.

What it is: CVE-2024-51569 is a high-severity memory corruption vulnerability in Apache NimBLE, published on 26 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-51569 in the wild and no public exploit code.

Affected product: Apache NimBLE. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-51569/ (Markdown: https://insights.sbomify.com/CVE-2024-51569/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-51569
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-51569
- OSV: https://osv.dev/vulnerability/CVE-2024-51569

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-51569/
Summaries are generated and may contain mistakes; the official description above is the record.