How severe is CVE-2021-33115?

CVE-2021-33115 has a CVSS 3.x base score of 8.8, 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 high, and availability high.

Is CVE-2021-33115 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-2021-33115?

CVE-2021-33115 affects Intel Uefi Wifi Driver. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-33115?

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-2021-33115 published?

CVE-2021-33115 was published on 2022-02-09 and last updated on 2026-06-17.

CVE-2021-33115

CVE-2021-33115 is a high-severity vulnerability in Intel Uefi Wifi Driver with a CVSS 3.x base score of 8.8. 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 8.8)
CVSS v2: 5.8
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Intel Uefi Wifi Driver
Published: 2022-02-09
Last modified: 2026-06-17

Description

Improper input validation for some Intel(R) PROSet/Wireless WiFi in UEFI may allow an unauthenticated user to potentially enable escalation of privilege via adjacent access.

Frequently asked questions

What is CVE-2021-33115?: Improper input validation for some Intel(R) PROSet/Wireless WiFi in UEFI may allow an unauthenticated user to potentially enable escalation of privilege via adjacent access.
How severe is CVE-2021-33115?: CVE-2021-33115 has a CVSS 3.x base score of 8.8, 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 high, and availability high.
Is CVE-2021-33115 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-2021-33115?: CVE-2021-33115 affects Intel Uefi Wifi Driver. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-33115?: 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-2021-33115 published?: CVE-2021-33115 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 (1)

cpe:2.3:a:intel:uefi_wifi_driver:*:*:*:*:*:*:*:*

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