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CVE-2021-26257

20
FAUCET Score

CVE-2021-26257 describes an improper buffer restriction vulnerability in firmware for certain Intel Wireless and Killer Bluetooth products before version 22.120. This flaw allows an authenticated local user to potentially cause a denial of service. With a CVSS score of 5.5 (Medium), the attack requires local access and low privileges, with no user interaction needed, impacting availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 22.120CPE matchmatch criteria
cpe:2.3:o:intel:wi-fi_6_ax411_firmware:*:*:*:*:*:*:*:*
< 22.120CPE matchmatch criteria
cpe:2.3:o:intel:wi-fi_6_ax211_firmware:*:*:*:*:*:*:*:*
< 22.120CPE matchmatch criteria
cpe:2.3:o:intel:wi-fi_6_ax210_firmware:*:*:*:*:*:*:*:*
< 22.120CPE matchmatch criteria
cpe:2.3:o:intel:wi-fi_6_ax201_firmware:*:*:*:*:*:*:*:*
< 22.120CPE matchmatch criteria
cpe:2.3:o:intel:wi-fi_6_ax200_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.19%
Probability of exploitation in next 30 days
EPSS Percentile
8.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0019 is in the 43rd percentile among its peer group of 15,932 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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-00628.html
PatchVendor Advisory