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CVE-2021-33155

20
FAUCET Score

CVE-2021-33155 is an improper input validation vulnerability affecting firmware in certain Intel Wireless Bluetooth and Killer Bluetooth products prior to version 22.100. This medium-severity vulnerability, with a CVSS score of 5.7, allows an authenticated attacker within adjacent network range to potentially cause a denial of service. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 22.100CPE matchmatch criteria
cpe:2.3:o:intel:ax211_firmware:*:*:*:*:*:*:*:*
< 22.100CPE matchmatch criteria
cpe:2.3:o:intel:ax210_firmware:*:*:*:*:*:*:*:*
< 22.100CPE matchmatch criteria
cpe:2.3:o:intel:ax201_firmware:*:*:*:*:*:*:*:*
< 22.100CPE matchmatch criteria
cpe:2.3:o:intel:ax200_firmware:*:*:*:*:*:*:*:*
< 22.100CPE matchmatch criteria
cpe:2.3:o:intel:ac_9560_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.7MEDIUM

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.1
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.47%
Probability of exploitation in next 30 days
EPSS Percentile
37.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0047 is in the 63rd percentile among its peer group of 314 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

intel.com / content/www/us/en/security-center/advisory/intel-sa-00604.html
Vendor Advisory