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CVE-2022-21233

21
FAUCET Score

CVE-2022-21233 describes an improper isolation of shared resources in certain Intel processors, potentially leading to information disclosure through local access by a privileged user. This vulnerability carries a CVSS score of 5.5 (Medium), indicating a low attack complexity and requiring local access, with the primary impact being high confidentiality compromise. There is no evidence of active exploitation, nor is public exploit code available in Metasploit, Nuclei, or ExploitDB. Despite its low EPSS score, the vulnerability has garnered some community discussion and media coverage, suggesting awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:intel:pentium_j4205_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:intel:pentium_n4200_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:intel:pentium_n4200e_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:intel:celeron_j3455_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:intel:celeron_j3355_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:H/I:N/A:N

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

Exploit Intelligence

EPSS Score
0.33%
Probability of exploitation in next 30 days
EPSS Percentile
25.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0033 is in the 82nd 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

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

Remediation

Patch Available

Vendor Patches (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-1160.76.1.rt56.1220.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-1160.76.1.el7
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: microcode_ctl
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: microcode_ctl
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: microcode_ctl
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel

Vendor Advisories (1)

redhatCVE-2022-21233Moderate

hw: cpu: Intel: Stale Data Read from legacy xAPIC vulnerability

Aug 9, 2022

References

lists.debian.org / debian-lts-announce/2023/04/msg00000.html
security.netapp.com / advisory/ntap-20220923-0002
Third Party Advisory
intel.com / content/www/us/en/security-center/advisory/intel-sa-00657.html
MitigationVendor Advisory