CVE-2021-33114

Improper input validation for some Intel(R) PROSet/Wireless WiFi in multiple operating systems and Killer(TM) WiFi in Windows 10 and 11 may allow an authenticated user to potentially enable denial of service via adjacent access.

Published: 2022-02-09 Last update: 2025-05-05 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-33114 is rated Low Risk (36.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.17%). 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-2021-33114

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 2026-03-06 0.28% 0.17% -0.11%
2 2025-11-21 0.10% 0.28% +0.18%
3 2025-11-18 — 0.10% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-33114

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.7 3.1 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.1 3.6 [email protected]
5.7 3.1 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.1 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0
2.7 2.0 LOW
AV:A/AC:L/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 5.1 2.9 [email protected]

Weakness enumeration for CVE-2021-33114

OS Trackers for CVE-2021-33114

vendor priority summary link
suse high CVE-2021-33114 severity important: SUSE including 2 source package names (kernel-firmware, ucode-amd), 43 product×package rows across 25 product lines (HPE Helion OpenStack 8, SUSE Linux Enterprise High Performance Computing 12 SP5, … (25 product lines)): Known Not Affected 43. https://www.suse.com/security/cve/CVE-2021-33114/
ubuntu medium CVE-2021-33114 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-2021-33114

Affected software / configurations for CVE-2021-33114

Vendor Product Version Raw CPE
intel ac_3165_firmware < 22.80 cpe:2.3:o:intel:ac_3165_firmware:*:*:*:*:*:*:*:*
intel ac_3168_firmware < 22.80 cpe:2.3:o:intel:ac_3168_firmware:*:*:*:*:*:*:*:*
intel ac_7265_firmware < 22.80 cpe:2.3:o:intel:ac_7265_firmware:*:*:*:*:*:*:*:*
intel ac_8260_firmware < 22.80 cpe:2.3:o:intel:ac_8260_firmware:*:*:*:*:*:*:*:*
intel ac_8265_firmware < 22.80 cpe:2.3:o:intel:ac_8265_firmware:*:*:*:*:*:*:*:*
intel ac_9260_firmware < 22.80 cpe:2.3:o:intel:ac_9260_firmware:*:*:*:*:*:*:*:*
intel ac_9461_firmware < 22.80 cpe:2.3:o:intel:ac_9461_firmware:*:*:*:*:*:*:*:*
intel ac_9462_firmware < 22.80 cpe:2.3:o:intel:ac_9462_firmware:*:*:*:*:*:*:*:*
intel ac_9560_firmware < 22.80 cpe:2.3:o:intel:ac_9560_firmware:*:*:*:*:*:*:*:*
intel ax200_firmware < 22.80 cpe:2.3:o:intel:ax200_firmware:*:*:*:*:*:*:*:*
intel ax201_firmware < 22.80 cpe:2.3:o:intel:ax201_firmware:*:*:*:*:*:*:*:*
intel ax210_firmware < 22.80 cpe:2.3:o:intel:ax210_firmware:*:*:*:*:*:*:*:*
intel ac_1550_firmware < 3.1021.733.0 cpe:2.3:o:intel:ac_1550_firmware:*:*:*:*:*:*:*:*
intel ax1650_firmware < 3.1021.733.0 cpe:2.3:o:intel:ax1650_firmware:*:*:*:*:*:*:*:*
intel ax1675_firmware < 3.1021.733.0 cpe:2.3:o:intel:ax1675_firmware:*:*:*:*:*:*:*:*

References for CVE-2021-33114

cvelogic Threat Intelligence