How severe is CVE-2021-33110?

CVE-2021-33110 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-33110 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-33110?

CVE-2021-33110 primarily affects Intel Ac 1550 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-2021-33110?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-33110 published?

CVE-2021-33110 was published on 2022-02-09 and last updated on 2026-06-17.

CVE-2021-33110

CVE-2021-33110 is a medium-severity vulnerability in Intel Ac 1550 Firmware with a CVSS 3.x base score of 6.5. 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: Medium (CVSS 3.x base score 6.5)
CVSS v2: 3.3
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Intel Ac 1550 Firmware
Published: 2022-02-09
Last modified: 2026-06-17

Description

Improper input validation for some Intel(R) Wireless Bluetooth(R) products and Killer(TM) Bluetooth(R) products in Windows 10 and 11 before version 22.80 may allow an unauthenticated user to potentially enable denial of service via adjacent access.

Frequently asked questions

What is CVE-2021-33110?: Improper input validation for some Intel(R) Wireless Bluetooth(R) products and Killer(TM) Bluetooth(R) products in Windows 10 and 11 before version 22.80 may allow an unauthenticated user to potentially enable denial of service via adjacent access.
How severe is CVE-2021-33110?: CVE-2021-33110 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-33110 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-33110?: CVE-2021-33110 primarily affects Intel Ac 1550 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-2021-33110?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-33110 published?: CVE-2021-33110 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-00581.html

Affected products (15)

cpe:2.3:o:intel:ac_1550_firmware:*:*:*:*:*:*:*:*
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:ax1650_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ax1675_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ax200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ax201_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:intel:ax210_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Intel Ac 1550 Firmware

CVE-2021-33113 — High (CVSS 8.1): Improper input validation for some Intel(R) PROSet/Wireless WiFi in multiple operating systems and Killer(TM) WiFi in…
CVE-2021-33155 — Medium (CVSS 5.7): Improper input validation in firmware for some Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products…
CVE-2021-33139 — Medium (CVSS 5.7): Improper conditions check in firmware for some Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products…
CVE-2021-33114 — Medium (CVSS 5.7): Improper input validation for some Intel(R) PROSet/Wireless WiFi in multiple operating systems and Killer(TM) WiFi in…
CVE-2020-26558 — Medium (CVSS 4.2): Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby…
CVE-2020-24586 — Low (CVSS 3.5): The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP)…

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