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CVE-2021-33135

16
FAUCET Score

CVE-2021-33135 describes an uncontrolled resource consumption vulnerability within the Intel Software Guard Extensions (SGX) drivers in the Linux kernel. An authenticated local user could exploit this flaw to potentially cause a denial of service. Rated Medium with a CVSS score of 5.5, this vulnerability requires local access and low privileges, but does not involve user interaction. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.14CPE matchmatch criteria
cpe:2.3:a:intel:software_guard_extensions:*:*:*:*:*:linux:*:*

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
0.27%
Probability of exploitation in next 30 days
EPSS Percentile
18.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0027 is in the 74th percentile among its peer group of 15,938 CVEs.

Social Chatter

No social media mentions found for this CVE.

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-2021-33135Low

kernel: Uncontrolled resource consumption in drivers for Intel SGX may lead to DoS

May 10, 2022

References

intel.com / content/www/us/en/security-center/advisory/intel-sa-00603.html
ProductVendor Advisory