# What is CVE-2016-8224?

> CVE-2016-8224 is a medium-severity flaw (CVSS 4.4) in BIOS from Lenovo, published on 29 November 2016. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 0.3%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2016-8224

## At a glance

- **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle.
- **Precursor Intelligence risk score:** 16 out of 100 (Info); action: Track. Kept up to date as the evidence changes.
- **Severity:** Medium (CVSS 4.4 out of 10)
- **Known to be exploited:** No, not on the list of flaws known to be exploited today
- **Chance of use in the next 30 days:** 0.3% (latest exploit-likelihood forecast)
- **Published:** 29 November 2016
- **Record last updated:** 12 April 2025
- **Main product:** BIOS from Lenovo
- **Affected products:** 57

## What is CVE-2016-8224? In plain terms

An attacker has to be already on the device with an administrator account, and nobody has to click anything. If it works, the attacker can take it offline.

### The official description

A vulnerability has been identified in some Lenovo Notebook and ThinkServer systems where an attacker with administrative privileges on a system could install a program that circumvents Intel Management Engine (ME) protections. This could result in a denial of service or privilege escalation attack on the system.

### What kind of flaw is it?

- Unknown: Unknown

### How an attack on it works

- Where an attacker can be: Already on the device
- How hard it is to pull off: Easy: no special conditions
- Login needed first: An administrator account
- Does someone have to click: No, nobody has to do anything
- What an attacker gets: Can take it offline

Severity vector: `CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H`

## Is CVE-2016-8224 being exploited? Not that we know of

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 0.3%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 0.3%, 0.3%, 0.3%, 0.3%, 0.3%, 0.3%, 0.3%.

### Timeline

- 29 November 2016: Published
- 12 April 2025: Record last updated

### How Precursor Intelligence ranks it

CVE-2016-8224 scores **16 out of 100 (Info)**, with the action "Track".

Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less:

- Evidence it is being exploited: biggest factor
- How severe it is: strong factor
- How widely exposed it is: smaller factor
- Threat activity around it: smaller factor

85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it.

## Who is affected by CVE-2016-8224?

The published record lists 57 products.

- [BIOS](https://www.precursorintelligence.com/product/lenovo/bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook 110 14ibr](https://www.precursorintelligence.com/product/lenovo/notebook_110_14ibr) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook 110 14ibr BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_110_14ibr_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook 110 15ibr](https://www.precursorintelligence.com/product/lenovo/notebook_110_15ibr) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook 110 15ibr BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_110_15ibr_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook B70 80](https://www.precursorintelligence.com/product/lenovo/notebook_b70_80) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook B70 80 BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_b70_80_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook E31 80](https://www.precursorintelligence.com/product/lenovo/notebook_e31_80) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook E31 80 BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_e31_80_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook E40 80](https://www.precursorintelligence.com/product/lenovo/notebook_e40_80) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook E40 80 BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_e40_80_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook E41 80](https://www.precursorintelligence.com/product/lenovo/notebook_e41_80) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook E41 80 BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_e41_80_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook E51 80](https://www.precursorintelligence.com/product/lenovo/notebook_e51_80) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook E51 80 BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_e51_80_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook G40 80](https://www.precursorintelligence.com/product/lenovo/notebook_g40_80) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook G40 80 BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_g40_80_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook G50 80](https://www.precursorintelligence.com/product/lenovo/notebook_g50_80) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook G50 80 BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_g50_80_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook G50 80 Touch](https://www.precursorintelligence.com/product/lenovo/notebook_g50_80_touch) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook G50 80 Touch BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_g50_80_touch_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook Ideapad 300 14ibr](https://www.precursorintelligence.com/product/lenovo/notebook_ideapad_300_14ibr) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook Ideapad 300 14ibr BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_ideapad_300_14ibr_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook Ideapad 300 14isk](https://www.precursorintelligence.com/product/lenovo/notebook_ideapad_300_14isk) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook Ideapad 300 14isk BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_ideapad_300_14isk_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook Ideapad 300 15ibr](https://www.precursorintelligence.com/product/lenovo/notebook_ideapad_300_15ibr) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook Ideapad 300 15ibr BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_ideapad_300_15ibr_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook Ideapad 300 15isk](https://www.precursorintelligence.com/product/lenovo/notebook_ideapad_300_15isk) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook Ideapad 300 15isk BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_ideapad_300_15isk_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook Ideapad 300 17isk](https://www.precursorintelligence.com/product/lenovo/notebook_ideapad_300_17isk) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook Ideapad 300 17isk BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_ideapad_300_17isk_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook Ideapad 510s 12isk](https://www.precursorintelligence.com/product/lenovo/notebook_ideapad_510s_12isk) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook Ideapad 510s 12isk BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_ideapad_510s_12isk_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook K21 80](https://www.precursorintelligence.com/product/lenovo/notebook_k21_80) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook K21 80 BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_k21_80_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook K41 80](https://www.precursorintelligence.com/product/lenovo/notebook_k41_80) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook K41 80 BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_k41_80_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook Miix 710 12ikb](https://www.precursorintelligence.com/product/lenovo/notebook_miix_710_12ikb) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook Miix 710 12ikb BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_miix_710_12ikb_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook Xiaoxin Air 12](https://www.precursorintelligence.com/product/lenovo/notebook_xiaoxin_air_12) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook Xiaoxin Air 12 BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_xiaoxin_air_12_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook Yoga 510 14isk](https://www.precursorintelligence.com/product/lenovo/notebook_yoga_510_14isk) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook Yoga 510 14isk BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_yoga_510_14isk_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook Yoga 510 15isk](https://www.precursorintelligence.com/product/lenovo/notebook_yoga_510_15isk) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook Yoga 510 15isk BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_yoga_510_15isk_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook Yoga 710 11ikb](https://www.precursorintelligence.com/product/lenovo/notebook_yoga_710_11ikb) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook Yoga 710 11ikb BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_yoga_710_11ikb_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook Yoga 710 11isk](https://www.precursorintelligence.com/product/lenovo/notebook_yoga_710_11isk) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook Yoga 710 11isk BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_yoga_710_11isk_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook Yoga 900 13isk](https://www.precursorintelligence.com/product/lenovo/notebook_yoga_900_13isk) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook Yoga 900 13isk BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_yoga_900_13isk_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Notebook Yoga 900s 12isk](https://www.precursorintelligence.com/product/lenovo/notebook_yoga_900s_12isk) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Notebook Yoga 900s 12isk BIOS](https://www.precursorintelligence.com/product/lenovo/notebook_yoga_900s_12isk_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Thinkserver Ts150](https://www.precursorintelligence.com/product/lenovo/thinkserver_ts150) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Ts150 BIOS](https://www.precursorintelligence.com/product/lenovo/thinkserver_ts150_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Thinkserver Ts450](https://www.precursorintelligence.com/product/lenovo/thinkserver_ts450) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Ts450 BIOS](https://www.precursorintelligence.com/product/lenovo/thinkserver_ts450_bios) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified

## How do I fix CVE-2016-8224?

1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list.
2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisory first in the list.
3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in.
4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood.

### References

- [support.lenovo.com](https://support.lenovo.com/us/en/solutions/LEN_9903) (Vendor advisory)
- [securityfocus.com](http://www.securityfocus.com/bid/94595)

## Questions

### What is CVE-2016-8224?

CVE-2016-8224 is a medium-severity flaw in BIOS from Lenovo, published on 29 November 2016. An attacker has to be already on the device with an administrator account, and nobody has to click anything. If it works, the attacker can take it offline.

### How serious is CVE-2016-8224?

It scores 4.4 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2016-8224 is 16 out of 100, which is Info. Its action is "Track". No sign of exploitation and a low forecast. Patch it in your normal update cycle.

### Is CVE-2016-8224 being exploited?

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 0.3%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2016-8224 affect?

For BIOS from Lenovo: version not specified. The record lists 57 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2016-8224?

Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet.

## Does CVE-2016-8224 affect you?

Precursor Intelligence keeps checking for you:

- **Tell us what you run.** Pick your software from a list, or let us work it out from your website.
- **We match it to every flaw.** Over 400,000 published flaws, checked against your list.
- **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it.
- **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools.

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