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CVE-2021-33061

20
FAUCET Score

CVE-2021-33061 describes an insufficient control flow management vulnerability affecting Intel 82599 Ethernet Controllers and Adapters. An authenticated local user could exploit this to potentially cause a denial of service. With a CVSS score of 5.5 (Medium), this vulnerability requires local access and low attack complexity, but only impacts availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

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
20.5%
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 76th percentile among its peer group of 15,940 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-2021-33061Moderate

kernel: insufficient control flow management 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