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CVE-2021-33096

20
FAUCET Score

CVE-2021-33096 describes an improper isolation of shared resources in the network on chip for Intel 82599 Ethernet Controllers and Adapters. This vulnerability, rated Medium severity (CVSS 5.5), allows an authenticated local user to potentially cause a denial of service. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.13.4CPE matchmatch criteria
cpe:2.3:o:intel:82599en_firmware:*:*:*:*:*:*:*:*
< 5.13.4CPE matchmatch criteria
cpe:2.3:o:intel:82599eb_firmware:*:*:*:*:*:*:*:*
< 5.13.4CPE matchmatch criteria
cpe:2.3:o:intel:82599es_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
0.28%
Probability of exploitation in next 30 days
EPSS Percentile
19.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0028 is in the 75th percentile among its peer group of 15,938 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

Vendor Advisories (1)

redhatCVE-2021-33096Moderate

kernel: improper isolation of shared resources in network on chip for the Intel(R) 82599 Ethernet Controllers and Adapters may lead to DoS

Feb 18, 2022

References

security.netapp.com / advisory/ntap-20220210-0010
Third Party Advisory
intel.com / content/www/us/en/security-center/advisory/intel-sa-00571.html
Vendor Advisory