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CVE-2021-0156· NVD / CVE Program· CNA intel

Improper input validation in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable an escalation o

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.

HighCVSS 7.8 · v3.1—No exploit No fix recorded

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Published
Feb 9, 2022
Updated
Jun 16, 2026
EPSS
0.3% · 20th percentile
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Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Affected systems

VendorProduct
intelxeon bronze 3206r firmware
intelxeon bronze 3206r
intelxeon gold 5218r firmware
intelxeon gold 5218r
intelxeon gold 5220r firmware
intelxeon gold 5220r
intelxeon gold 6208u firmware
intelxeon gold 6208u
intelxeon gold 6226r firmware
intelxeon gold 6226r
intelxeon gold 6230r firmware
intelxeon gold 6230r

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 core i3-10100 firmwareall versions
  • intel core i3-10100e firmwareall versions
  • intel core i3-10100f firmwareall versions
  • intel core i3-10100t firmwareall versions
  • intel core i3-10100te firmwareall versions
  • intel core i3-10100y firmwareall versions
  • intel core i3-10105 firmwareall versions
  • intel core i3-10105f firmwareall versions
  • intel core i3-10105t firmwareall versions
  • intel core i3-10305 firmwareall versions
  • intel core i3-10305t firmwareall versions
  • intel core i3-10325 firmwareall versions
  • intel core i3-11100he firmwareall versions
  • intel core i3-1110g4 firmwareall versions
  • intel core i3-1115g4 firmwareall versions
  • intel core i3-1115g4e firmwareall versions
  • intel core i3-1115gre firmwareall versions
  • intel core i3-1120g4 firmwareall versions
  • intel core i3-1125g4 firmwareall versions
  • intel core i5-10200h firmwareall 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(R) Processors

    • See referencesaffected

Other highest-scoring records for the same primary product.

  • CVE-2021-33123Improper access control in the BIOS authenticated code module for some Intel(R) Processors may allow a privileged user to potentially enable
    31Monitor
  • CVE-2021-0117Pointer issues in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable an escalation of privilege via
    31Monitor
  • CVE-2021-0116Out-of-bounds write in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable an escalation of privileg
    31Monitor
  • CVE-2020-0590Improper input validation in BIOS firmware for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of
    31Monitor
  • CVE-2021-33124Out-of-bounds write in the BIOS authenticated code module for some Intel(R) Processors may allow a privileged user to potentially enable aes
    26Monitor
  • CVE-2021-0125Improper initialization in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privile
    26Monitor

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.

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

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

CVSS vector

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

nvd-primary

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records