How severe is CVE-2021-0147?

CVE-2021-0147 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-0147 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-0147?

CVE-2021-0147 affects Intel Power Management Controller. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-0147?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-0147 published?

CVE-2021-0147 was published on 2022-02-09 and last updated on 2026-06-17.

CVE-2021-0147

CVE-2021-0147 is a medium-severity vulnerability in Intel Power Management Controller with a CVSS 3.x base score of 4.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-667.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
CVSS v2: 2.1
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-667
Affected product: Intel Power Management Controller
Published: 2022-02-09
Last modified: 2026-06-17

Description

Improper locking in the Power Management Controller (PMC) for some Intel Chipset firmware before versions pmc_fw_lbg_c1-21ww02a and pmc_fw_lbg_b0-21ww02a may allow a privileged user to potentially enable denial of service via local access.

Frequently asked questions

What is CVE-2021-0147?: Improper locking in the Power Management Controller (PMC) for some Intel Chipset firmware before versions pmc_fw_lbg_c1-21ww02a and pmc_fw_lbg_b0-21ww02a may allow a privileged user to potentially enable denial of service via local access.
How severe is CVE-2021-0147?: CVE-2021-0147 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-0147 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-0147?: CVE-2021-0147 affects Intel Power Management Controller. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-0147?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-0147 published?: CVE-2021-0147 was published on 2022-02-09 and last updated on 2026-06-17.

References

https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00470.html

Affected products (1)

cpe:2.3:a:intel:power_management_controller:*:*:*:*:*:*:*:*

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