# What is CVE-2019-14557?

> CVE-2019-14557 is a high-severity flaw (CVSS 8.0) in BIOS from Intel, published on 5 October 2020. 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 0.5%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2019-14557

## 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:** 47 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes.
- **Severity:** High (CVSS 8.0 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:** 0.5% (latest exploit-likelihood forecast)
- **Published:** 5 October 2020
- **Record last updated:** 19 October 2020
- **Main product:** BIOS from Intel
- **Affected products:** 55

## What is CVE-2019-14557? In plain terms

An attacker has to be on the same local network with an ordinary user account, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline.

### The official description

Buffer overflow in BIOS firmware for 8th, 9th, 10th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 & 5000 Series Processors may allow an authenticated user to potentially enable elevation of privilege or denial of service via adjacent access.

### What kind of flaw is it?

- CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

### How an attack on it works

- Where an attacker can be: On the same local network
- How hard it is to pull off: Easy: no special conditions
- Login needed first: An ordinary user account
- Does someone have to click: No, nobody has to do anything
- What an attacker gets: Can read data, change data and take it offline

Severity vector: `CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`

## Is CVE-2019-14557 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 0.5%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 0.5%, 0.5%, 0.5%, 0.5%, 0.5%, 0.5%, 0.5%.

### Timeline

- 5 October 2020: Published
- 19 October 2020: Record last updated

### How Precursor Intelligence ranks it

CVE-2019-14557 scores **47 out of 100 (Medium)**, with the action "Plan remediation".

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-2019-14557?

The published record lists 55 products.

- [BIOS](https://www.precursorintelligence.com/product/intel/bios) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Operating system): version not specified
- [Celeron 4205u](https://www.precursorintelligence.com/product/intel/celeron_4205u) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Celeron 4305u](https://www.precursorintelligence.com/product/intel/celeron_4305u) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Celeron 4305ue](https://www.precursorintelligence.com/product/intel/celeron_4305ue) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Celeron 5205u](https://www.precursorintelligence.com/product/intel/celeron_5205u) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Celeron 5305u](https://www.precursorintelligence.com/product/intel/celeron_5305u) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I3 8100](https://www.precursorintelligence.com/product/intel/core_i3_8100) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I3 8100f](https://www.precursorintelligence.com/product/intel/core_i3_8100f) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I3 8100t](https://www.precursorintelligence.com/product/intel/core_i3_8100t) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I3 8300](https://www.precursorintelligence.com/product/intel/core_i3_8300) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I3 8300t](https://www.precursorintelligence.com/product/intel/core_i3_8300t) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I3 8350k](https://www.precursorintelligence.com/product/intel/core_i3_8350k) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I3 9100](https://www.precursorintelligence.com/product/intel/core_i3_9100) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I3 9100f](https://www.precursorintelligence.com/product/intel/core_i3_9100f) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I3 9100t](https://www.precursorintelligence.com/product/intel/core_i3_9100t) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I3 9300](https://www.precursorintelligence.com/product/intel/core_i3_9300) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I3 9300t](https://www.precursorintelligence.com/product/intel/core_i3_9300t) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I3 9320](https://www.precursorintelligence.com/product/intel/core_i3_9320) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I3 9350k](https://www.precursorintelligence.com/product/intel/core_i3_9350k) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I3 9350kf](https://www.precursorintelligence.com/product/intel/core_i3_9350kf) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 8400](https://www.precursorintelligence.com/product/intel/core_i5_8400) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 8400t](https://www.precursorintelligence.com/product/intel/core_i5_8400t) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 8500](https://www.precursorintelligence.com/product/intel/core_i5_8500) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 8500t](https://www.precursorintelligence.com/product/intel/core_i5_8500t) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 8600](https://www.precursorintelligence.com/product/intel/core_i5_8600) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 8600k](https://www.precursorintelligence.com/product/intel/core_i5_8600k) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 8600t](https://www.precursorintelligence.com/product/intel/core_i5_8600t) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 9400](https://www.precursorintelligence.com/product/intel/core_i5_9400) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 9400f](https://www.precursorintelligence.com/product/intel/core_i5_9400f) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 9400t](https://www.precursorintelligence.com/product/intel/core_i5_9400t) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 9500](https://www.precursorintelligence.com/product/intel/core_i5_9500) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 9500f](https://www.precursorintelligence.com/product/intel/core_i5_9500f) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 9500t](https://www.precursorintelligence.com/product/intel/core_i5_9500t) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 9600](https://www.precursorintelligence.com/product/intel/core_i5_9600) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 9600k](https://www.precursorintelligence.com/product/intel/core_i5_9600k) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 9600kf](https://www.precursorintelligence.com/product/intel/core_i5_9600kf) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I5 9600t](https://www.precursorintelligence.com/product/intel/core_i5_9600t) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I7 1060g7](https://www.precursorintelligence.com/product/intel/core_i7_1060g7) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I7 1060ng7](https://www.precursorintelligence.com/product/intel/core_i7_1060ng7) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I7 1065g7](https://www.precursorintelligence.com/product/intel/core_i7_1065g7) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I7 1068ng7](https://www.precursorintelligence.com/product/intel/core_i7_1068ng7) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I7 8086k](https://www.precursorintelligence.com/product/intel/core_i7_8086k) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I7 8700](https://www.precursorintelligence.com/product/intel/core_i7_8700) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I7 8700k](https://www.precursorintelligence.com/product/intel/core_i7_8700k) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I7 8700t](https://www.precursorintelligence.com/product/intel/core_i7_8700t) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I7 9700](https://www.precursorintelligence.com/product/intel/core_i7_9700) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I7 9700f](https://www.precursorintelligence.com/product/intel/core_i7_9700f) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I7 9700k](https://www.precursorintelligence.com/product/intel/core_i7_9700k) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I7 9700kf](https://www.precursorintelligence.com/product/intel/core_i7_9700kf) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I7 9700t](https://www.precursorintelligence.com/product/intel/core_i7_9700t) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I9 9900](https://www.precursorintelligence.com/product/intel/core_i9_9900) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I9 9900k](https://www.precursorintelligence.com/product/intel/core_i9_9900k) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I9 9900kf](https://www.precursorintelligence.com/product/intel/core_i9_9900kf) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I9 9900ks](https://www.precursorintelligence.com/product/intel/core_i9_9900ks) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified
- [Core I9 9900t](https://www.precursorintelligence.com/product/intel/core_i9_9900t) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Hardware): version not specified

## How do I fix CVE-2019-14557?

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

- [intel.com](https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00356.html) (Vendor advisory)

## Questions

### What is CVE-2019-14557?

CVE-2019-14557 is a high-severity flaw in BIOS from Intel, published on 5 October 2020. An attacker has to be on the same local network with an ordinary user account, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline.

### How serious is CVE-2019-14557?

It scores 8.0 out of 10 on the CVSS severity scale, which is high. Our risk score for CVE-2019-14557 is 47 out of 100, which is Medium. Its action is "Plan remediation". No sign of exploitation and a low forecast. Patch it in your normal update cycle.

### Is CVE-2019-14557 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 0.5%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2019-14557 affect?

For BIOS from Intel: version not specified. The record lists 55 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2019-14557?

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-2019-14557 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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