CVE-2021-33847

Improper buffer restrictions in firmware for some Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products before version 22.120 may allow an authenticated user to potentially enable escalation of privilege via local access.

Published: 2022-08-18 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-33847 is rated Low Risk (35.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.21%). 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-2021-33847

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% 0.21% +0.15%
2 2025-08-20 0.18% 0.06% -0.13%
3 2025-08-19 — 0.18% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-33847

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/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:L)
A normal user session is enough; they don’t have to be admin.
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.
 1.8 5.9 [email protected]
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/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:L)
A normal user session is enough; they don’t have to be admin.
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.
 1.8 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2021-33847

Affected software / configurations for CVE-2021-33847

Vendor Product Version Raw CPE
intel wi-fi_6_ax411_firmware < 22.120 cpe:2.3:o:intel:wi-fi_6_ax411_firmware:*:*:*:*:*:*:*:*
intel wi-fi_6_ax211_firmware < 22.120 cpe:2.3:o:intel:wi-fi_6_ax211_firmware:*:*:*:*:*:*:*:*
intel wi-fi_6_ax210_firmware < 22.120 cpe:2.3:o:intel:wi-fi_6_ax210_firmware:*:*:*:*:*:*:*:*
intel wi-fi_6_ax201_firmware < 22.120 cpe:2.3:o:intel:wi-fi_6_ax201_firmware:*:*:*:*:*:*:*:*
intel wi-fi_6_ax200_firmware < 22.120 cpe:2.3:o:intel:wi-fi_6_ax200_firmware:*:*:*:*:*:*:*:*
intel wireless-ac_9560_firmware < 22.120 cpe:2.3:o:intel:wireless-ac_9560_firmware:*:*:*:*:*:*:*:*
intel wireless-ac_9462_firmware < 22.120 cpe:2.3:o:intel:wireless-ac_9462_firmware:*:*:*:*:*:*:*:*
intel wireless-ac_9461_firmware < 22.120 cpe:2.3:o:intel:wireless-ac_9461_firmware:*:*:*:*:*:*:*:*
intel wireless-ac_9260_firmware < 22.120 cpe:2.3:o:intel:wireless-ac_9260_firmware:*:*:*:*:*:*:*:*
intel dual_band_wireless-ac_8265_firmware < 22.120 cpe:2.3:o:intel:dual_band_wireless-ac_8265_firmware:*:*:*:*:*:*:*:*
intel dual_band_wireless-ac_8260_firmware < 22.120 cpe:2.3:o:intel:dual_band_wireless-ac_8260_firmware:*:*:*:*:*:*:*:*
intel dual_band_wireless-ac_3168_firmware < 22.120 cpe:2.3:o:intel:dual_band_wireless-ac_3168_firmware:*:*:*:*:*:*:*:*
intel wireless_7265_firmware < 22.120 cpe:2.3:o:intel:wireless_7265_firmware:*:*:*:*:*:*:*:*
intel dual_band_wireless-ac_3165_firmware < 22.120 cpe:2.3:o:intel:dual_band_wireless-ac_3165_firmware:*:*:*:*:*:*:*:*
intel killer_wi-fi_6e_ax1690_firmware < 22.120 cpe:2.3:o:intel:killer_wi-fi_6e_ax1690_firmware:*:*:*:*:*:*:*:*
intel killer_wi-fi_6e_ax1675_firmware < 22.120 cpe:2.3:o:intel:killer_wi-fi_6e_ax1675_firmware:*:*:*:*:*:*:*:*
intel killer_wi-fi_6_ax1650_firmware < 22.120 cpe:2.3:o:intel:killer_wi-fi_6_ax1650_firmware:*:*:*:*:*:*:*:*
intel killer_wireless-ac_1550_firmware < 22.120 cpe:2.3:o:intel:killer_wireless-ac_1550_firmware:*:*:*:*:*:*:*:*

References for CVE-2021-33847

cvelogic Threat Intelligence