How severe is CVE-2021-0166?

CVE-2021-0166 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-0166 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-0166?

CVE-2021-0166 primarily affects Intel Amt Ac 8260 Firmware. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-0166?

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

When was CVE-2021-0166 published?

CVE-2021-0166 was published on 2022-02-09 and last updated on 2026-06-17.

CVE-2021-0166

CVE-2021-0166 is a medium-severity vulnerability in Intel Amt Ac 8260 Firmware with a CVSS 3.x base score of 6.7. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
CVSS v2: 4.6
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Intel Amt Ac 8260 Firmware
Published: 2022-02-09
Last modified: 2026-06-17

Description

Exposure of Sensitive Information to an Unauthorized Actor in firmware for some Intel(R) PROSet/Wireless Wi-Fi in multiple operating systems and some Killer(TM) Wi-Fi in Windows 10 and 11 may allow a privileged user to potentially enable escalation of privilege via local access.

Frequently asked questions

What is CVE-2021-0166?: Exposure of Sensitive Information to an Unauthorized Actor in firmware for some Intel(R) PROSet/Wireless Wi-Fi in multiple operating systems and some Killer(TM) Wi-Fi in Windows 10 and 11 may allow a privileged user to potentially enable escalation of privilege via local access.
How severe is CVE-2021-0166?: CVE-2021-0166 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-0166 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-0166?: CVE-2021-0166 primarily affects Intel Amt Ac 8260 Firmware. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-0166?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-0166 published?: CVE-2021-0166 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-00539.html

Affected products (22)

cpe:2.3:o:intel:amt_ac_8260_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:amt_ac_8265_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:amt_ac_9260_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:amt_ac_9560_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:amt_wi-fi_6_ax200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:amt_wi-fi_6_ax201_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:amt_wi-fi_6_ax210_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:proset_ac_3165_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:proset_ac_3168_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:proset_ac_8260_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:proset_ac_8265_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:proset_ac_9260_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:proset_ac_9461_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:proset_ac_9462_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:proset_ac_9560_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:proset_wi-fi_6_ax200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:proset_wi-fi_6_ax201_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:proset_wi-fi_6e_ax210_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:proset_wireless_7265_\(rev_d\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:killer_ac_1550_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:killer_wi-fi_6_ax1650_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:killer_wi-fi_6e_ax1675_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Intel Amt Ac 8260 Firmware

CVE-2021-0163 — High (CVSS 8.8): Improper Validation of Consistency within input in software for Intel(R) PROSet/Wireless Wi-Fi and Killer(TM) Wi-Fi in…
CVE-2021-0162 — High (CVSS 8.8): Improper input validation in software for Intel(R) PROSet/Wireless Wi-Fi and Killer(TM) Wi-Fi in Windows 10 and 11 may…
CVE-2021-0066 — High (CVSS 8.4): Improper input validation in firmware for Intel(R) PROSet/Wireless Wi-Fi in multiple operating systems and Killer(TM)…
CVE-2021-0164 — High (CVSS 7.8): Improper access control in firmware for Intel(R) PROSet/Wireless Wi-Fi in multiple operating systems and Killer(TM)…
CVE-2021-0169 — Medium (CVSS 6.7): Uncontrolled Search Path Element in software for Intel(R) PROSet/Wireless Wi-Fi in Windows 10 and 11 may allow a…
CVE-2021-0168 — Medium (CVSS 6.7): Improper input validation in firmware for some Intel(R) PROSet/Wireless Wi-Fi in multiple operating systems and some…

All CVEs affecting Intel Amt Ac 8260 Firmware →

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