How severe is CVE-2021-33113?

CVE-2021-33113 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2021-33113 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-33113?

CVE-2021-33113 primarily affects Intel Ac 3165 Firmware. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-33113?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-33113 published?

CVE-2021-33113 was published on 2022-02-09 and last updated on 2026-06-17.

CVE-2021-33113

CVE-2021-33113 is a high-severity vulnerability in Intel Ac 3165 Firmware with a CVSS 3.x base score of 8.1. 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 4.8
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Intel Ac 3165 Firmware
Published: 2022-02-09
Last modified: 2026-06-17

Description

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 unauthenticated user to potentially enable denial of service or information disclosure via adjacent access.

Frequently asked questions

What is CVE-2021-33113?: 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 unauthenticated user to potentially enable denial of service or information disclosure via adjacent access.
How severe is CVE-2021-33113?: CVE-2021-33113 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2021-33113 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-33113?: CVE-2021-33113 primarily affects Intel Ac 3165 Firmware. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-33113?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-33113 published?: CVE-2021-33113 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-00582.html

Affected products (15)

cpe:2.3:o:intel:ac_3165_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ac_3168_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ac_7265_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ac_8260_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ac_8265_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ac_9260_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ac_9461_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ac_9462_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ac_9560_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ax200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ax201_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ax210_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ac_1550_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ax1650_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ax1675_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Intel Ac 3165 Firmware

CVE-2021-0071 — High (CVSS 8.8): Improper input validation in firmware for some Intel(R) PROSet/Wireless WiFi in UEFI may allow an unauthenticated user…
CVE-2021-0078 — High (CVSS 8.1): Improper input validation in software for some Intel(R) PROSet/Wireless WiFi and Killer(TM) WiFi in Windows 10 may…
CVE-2021-0151 — High (CVSS 7.8): Improper access control in the installer for some Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products…
CVE-2021-0082 — High (CVSS 7.8): Uncontrolled search path in software installer for Intel(R) PROSet/Wireless WiFi in Windows 10 may allow an…
CVE-2021-0065 — High (CVSS 7.8): Incorrect default permissions in the Intel(R) PROSet/Wireless WiFi software installer for Windows 10 before version…
CVE-2021-0064 — High (CVSS 7.8): Insecure inherited permissions in the Intel(R) PROSet/Wireless WiFi software installer for Windows 10 before version…

All CVEs affecting Intel Ac 3165 Firmware →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →