CVE-2020-8740· NVD / CVE Program· CNA intel

Out of bounds write in Intel BIOS platform sample code for some Intel(R) Processors may allow a privileged user to potentially enable escala

Noroxi assessment

Priority: Monitor (action score 26/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.41% (FIRST EPSS).
Someone with local access to the system can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Out of bounds write in Intel BIOS platform sample code for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.

MediumCVSS 6.7 · v3.1—No exploit No fix recorded

BDU:2020-05475

Published: Nov 12, 2020
Updated: Jun 16, 2026
EPSS: 0.4% · 34th percentile
CWE: CWE-787

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 26 / 40 · 6.7 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.4%

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
intel	bios	cpe:2.3:o:intel:bios
intel	core i5-7640x	cpe:2.3:h:intel:core_i5-7640x
intel	core i7-3820	cpe:2.3:h:intel:core_i7-3820
intel	core i7-3920xm	cpe:2.3:h:intel:core_i7-3920xm
intel	core i7-3930k	cpe:2.3:h:intel:core_i7-3930k
intel	core i7-3940xm	cpe:2.3:h:intel:core_i7-3940xm
intel	core i7-3960x	cpe:2.3:h:intel:core_i7-3960x
intel	core i7-3970x	cpe:2.3:h:intel:core_i7-3970x
intel	core i7-4820k	cpe:2.3:h:intel:core_i7-4820k
intel	core i7-4930k	cpe:2.3:h:intel:core_i7-4930k
intel	core i7-4930mx	cpe:2.3:h:intel:core_i7-4930mx
intel	core i7-4940mx	cpe:2.3:h:intel:core_i7-4940mx

and 188 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

intel biosall versions
netapp aff biosall versions
netapp fas biosall versions
netapp hci compute node biosall versions
netapp hci storage node biosall versions
netapp solidfire biosall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (intel). Independent of NVD's CPE analysis and usually ahead of it.

n/a Intel BIOS platform sample code for some Intel(R) Processors
- See referencesaffected

Same product

intel: all records

Other highest-scoring records for the same primary product.

CVE-2019-14557Buffer overflow in BIOS firmware for 8th, 9th, 10th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 & 5000 Series Processor
32Monitor
CVE-2020-12360Out of bounds read in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privileg
31Monitor
CVE-2020-8672Out of bound read in BIOS firmware for 8th, 9th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 Series Processors may allow
31Monitor
CVE-2020-8739Use of potentially dangerous function in Intel BIOS platform sample code for some Intel(R) Processors may allow an authenticated user to pot
31Monitor
CVE-2018-3612Intel NUC kits with insufficient input validation in system firmware, potentially allows a local attacker to elevate privileges to System Ma
31Monitor
CVE-2020-12359Insufficient control flow management in the firmware for some Intel(R) Processors may allow an unauthenticated user to potentially enable es
27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope