HOMEVULNERABILITIESCVE-2020-8740
MEDIUM

CVE-2020-8740

CWE-787Published: November 12, 2020· Updated: Jun 17, 2026

6.7
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2020-8740 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.7.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

intel320 product(s)
bioscore i5-7640xcore i7-3820core i7-3920xmcore i7-3930kcore i7-3940xmcore i7-3960xcore i7-3970xcore i7-4820kcore i7-4930kcore i7-4930mxcore i7-4940mx+308
netapp5 product(s)
aff biosfas bioshci compute node bioshci storage node biossolidfire bios
Source: NVD CPE · 325 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://security.netapp.com/advisory/ntap-20210122-0008/
ADVISORYhttps://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00390
ADVISORYhttps://security.netapp.com/advisory/ntap-20210122-0008/
ADVISORYhttps://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00390

All References (4)

→
https://security.netapp.com/advisory/ntap-20210122-0008/Third Party Advisory
→
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00390Vendor Advisory
→
https://security.netapp.com/advisory/ntap-20210122-0008/Third Party Advisory
→
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00390Vendor Advisory

Quick Facts

CVE IDCVE-2020-8740
CVSS Score6.7 / 10
SeverityMEDIUM
WeaknessCWE-787
CISA KEVNo
Affected2 vendor(s)
PublishedNov 12, 2020

Related CVEs (CWE-787)

CVE-2019-6235
10.0
CVE-2026-42369
10.0
CVE-2014-1478
10.0
CVE-2018-3991
10.0
CVE-2015-0235
10.0
CVE-2004-0978
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-8740 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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