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CVE-2021-0158

Improper input validation in the BIOS firmware for some Intel(R) Processors may allow a...

6.7 Medium

CVE-2021-0158 is a medium vulnerability (CVSS 6.7) in Intel Celeron N2805, published November 17, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.02%, the 87th percentile. No source names a fixed version.

What does this mean?
Severity
6.7 MediumCVSS 3.1, NVD
Exploit chance
3.02%EPSS, 87th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
No fix listedNo source names one

Description

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

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
High
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

3.02%Up 2.6 points since Nov 18, 2021
90%50%10%1%

Affected products

Show 472 moreShow less

What each source reports

NVD Score used6.7

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

Record
CVE-2021-0158
CVSS 3.1
6.7 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
4.6 MediumAV:L/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-20
Updated
2026-11-02
CVE List6.7

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

Record
CVE-2021-0158
CVSS 3.1
6.7 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
EUVDEUVD-2021-27776.7

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

Record
EUVD-2021-2777
CVSS 3.1
6.7 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-m56v-x7xr-772p6.7

Improper input validation in the BIOS firmware for some Intel(R) Processors may allow a...

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

Record
GHSA-m56v-x7xr-772p
CVSS 3.1
6.7 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02

History

History
RecordedChangedSources
facts
first indexedCVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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