HOMEVULNERABILITIESCVE-2021-0156
HIGH

CVE-2021-0156

CWE-20Published: February 9, 2022· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

Improper input validation in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable an escalation of privilege via local access.

NVD Source

Technical Analysis

CVE-2021-0156 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low 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 7.8.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

intel1356 product(s)
xeon bronze 3206r firmwarexeon bronze 3206rxeon gold 5218r firmwarexeon gold 5218rxeon gold 5220r firmwarexeon gold 5220rxeon gold 6208u firmwarexeon gold 6208uxeon gold 6226r firmwarexeon gold 6226rxeon gold 6230r firmwarexeon gold 6230r+1344
netapp2 product(s)
cloud backupfas\/aff bios
Source: NVD CPE · 1358 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-20220210-0007/
ADVISORYhttps://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00527.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20220210-0007/
ADVISORYhttps://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00527.html

All References (4)

→
https://security.netapp.com/advisory/ntap-20220210-0007/Third Party Advisory
→
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00527.htmlVendor Advisory
→
https://security.netapp.com/advisory/ntap-20220210-0007/Third Party Advisory
→
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00527.htmlVendor Advisory

Quick Facts

CVE IDCVE-2021-0156
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-20
CISA KEVNo
Affected2 vendor(s)
PublishedFeb 9, 2022

Related CVEs (CWE-20)

CVE-2007-5657
10.0
CVE-2007-5658
10.0
CVE-2004-1019
10.0
CVE-2005-0050
10.0
CVE-2004-0840
10.0
CVE-2008-0656
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-0156 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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