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.

Published: 2022-02-09 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-0166 is rated Low Risk (34.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.29%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-0166

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.06% 0.29% +0.23%
2 2025-05-05 0.15% 0.06% -0.09%
3 2025-04-02 — 0.15% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-0166

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.7 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 0.8 5.9 [email protected]
6.7 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 0.8 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0
4.6 2.0 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 6.4 [email protected]

Weakness enumeration for CVE-2021-0166

OS Trackers for CVE-2021-0166

vendor priority summary link
suse high CVE-2021-0166 severity important: SUSE including 52 source package names (kernel-firmware, kernel-firmware-20200107-3.26.1, …), 165 product×package rows across 49 product lines (Container suse/sle-micro-rancher/5.2, HPE Helion OpenStack 8, … (49 product lines)): Fixed 122, Known Not Affected 43. https://www.suse.com/security/cve/CVE-2021-0166/
ubuntu medium CVE-2021-0166 medium priority: Ubuntu including 1 source packages (linux-firmware), 14 status rows across 14 suites (bionic, focal, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): needs-triage 8, ignored 6. https://ubuntu.com/security/CVE-2021-0166

Affected software / configurations for CVE-2021-0166

Vendor Product Version Raw CPE
intel amt_ac_8260_firmware < 11.8.90 cpe:2.3:o:intel:amt_ac_8260_firmware:*:*:*:*:*:*:*:*
intel amt_ac_8265_firmware < 11.8.90 cpe:2.3:o:intel:amt_ac_8265_firmware:*:*:*:*:*:*:*:*
intel amt_ac_9260_firmware < 12.0.85 cpe:2.3:o:intel:amt_ac_9260_firmware:*:*:*:*:*:*:*:*
intel amt_ac_9560_firmware < 12.0.85 cpe:2.3:o:intel:amt_ac_9560_firmware:*:*:*:*:*:*:*:*
intel amt_wi-fi_6_ax200_firmware < 12.0.85 cpe:2.3:o:intel:amt_wi-fi_6_ax200_firmware:*:*:*:*:*:*:*:*
intel amt_wi-fi_6_ax200_firmware >= 14.0.0, < 14.1.60 cpe:2.3:o:intel:amt_wi-fi_6_ax200_firmware:*:*:*:*:*:*:*:*
intel amt_wi-fi_6_ax200_firmware >= 15.0.0, < 15.0.35 cpe:2.3:o:intel:amt_wi-fi_6_ax200_firmware:*:*:*:*:*:*:*:*
intel amt_wi-fi_6_ax201_firmware >= 14.0.0, < 14.1.60 cpe:2.3:o:intel:amt_wi-fi_6_ax201_firmware:*:*:*:*:*:*:*:*
intel amt_wi-fi_6_ax201_firmware >= 15.0.0, < 15.0.35 cpe:2.3:o:intel:amt_wi-fi_6_ax201_firmware:*:*:*:*:*:*:*:*
intel amt_wi-fi_6_ax210_firmware < 15.0.35 cpe:2.3:o:intel:amt_wi-fi_6_ax210_firmware:*:*:*:*:*:*:*:*
intel proset_ac_3165_firmware < 22.60 cpe:2.3:o:intel:proset_ac_3165_firmware:*:*:*:*:*:*:*:*
intel proset_ac_3168_firmware < 22.60 cpe:2.3:o:intel:proset_ac_3168_firmware:*:*:*:*:*:*:*:*
intel proset_ac_8260_firmware < 22.60 cpe:2.3:o:intel:proset_ac_8260_firmware:*:*:*:*:*:*:*:*
intel proset_ac_8265_firmware < 22.60 cpe:2.3:o:intel:proset_ac_8265_firmware:*:*:*:*:*:*:*:*
intel proset_ac_9260_firmware < 22.60 cpe:2.3:o:intel:proset_ac_9260_firmware:*:*:*:*:*:*:*:*
intel proset_ac_9461_firmware < 22.60 cpe:2.3:o:intel:proset_ac_9461_firmware:*:*:*:*:*:*:*:*
intel proset_ac_9462_firmware < 22.60 cpe:2.3:o:intel:proset_ac_9462_firmware:*:*:*:*:*:*:*:*
intel proset_ac_9560_firmware < 22.60 cpe:2.3:o:intel:proset_ac_9560_firmware:*:*:*:*:*:*:*:*
intel proset_wi-fi_6_ax200_firmware < 22.60 cpe:2.3:o:intel:proset_wi-fi_6_ax200_firmware:*:*:*:*:*:*:*:*
intel proset_wi-fi_6_ax201_firmware < 22.60 cpe:2.3:o:intel:proset_wi-fi_6_ax201_firmware:*:*:*:*:*:*:*:*
intel proset_wi-fi_6e_ax210_firmware < 22.60 cpe:2.3:o:intel:proset_wi-fi_6e_ax210_firmware:*:*:*:*:*:*:*:*
intel proset_wireless_7265_\(rev_d\)_firmware < 22.60 cpe:2.3:o:intel:proset_wireless_7265_\(rev_d\)_firmware:*:*:*:*:*:*:*:*
intel killer_ac_1550_firmware < 3.0 cpe:2.3:o:intel:killer_ac_1550_firmware:*:*:*:*:*:*:*:*
intel killer_wi-fi_6_ax1650_firmware < 3.0 cpe:2.3:o:intel:killer_wi-fi_6_ax1650_firmware:*:*:*:*:*:*:*:*
intel killer_wi-fi_6e_ax1675_firmware < 3.0 cpe:2.3:o:intel:killer_wi-fi_6e_ax1675_firmware:*:*:*:*:*:*:*:*

References for CVE-2021-0166

cvelogic Threat Intelligence