CVE-2022-21127

23

FAUCET Score

CVE-2022-21127 is an incomplete cleanup vulnerability in specific special register read operations affecting certain Intel Processors, Debian, and Xen. This flaw could allow an authenticated local user to potentially disclose sensitive information. With a CVSS score of 5.5 (Medium), it requires local access and user authentication, but has a high impact on confidentiality. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in the KEV catalog. Despite low EPSS and FAUCET scores, it has garnered some community discussion and media coverage, indicating awareness.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		All Versions ImpactedCPE matchmatch criteria	cpe:2.3:o:xen:xen:::::::x86:*
		< 1.14.100.3CPE matchmatch criteria	cpe:2.3:a:intel:sgx_dcap::::::linux::*
		< 1.14.100.3CPE matchmatch criteria	cpe:2.3:a:intel:sgx_dcap::::::windows::*
		< 2.16.100.3CPE matchmatch criteria	cpe:2.3:a:intel:sgx_psw::::::windows::*
		< 2.17.100.3CPE matchmatch criteria	cpe:2.3:a:intel:sgx_psw::::::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: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

5.46%

Probability of exploitation in next 30 days

EPSS Percentile

91.9%

Percentile rank of EPSS score among Peer Group

As of 2026-07-28

Model: v2026.06.15

This CVE's current EPSS score of 0.0546 is in the 100th 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

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 (43)

microsoftpatch availablevia msrc

Product: Windows Server 2012Fixed in: 6.2.9200.23736

microsoftpatch availablevia msrc

Product: Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)Fixed in: 6.0.6003.21507

microsoftpatch availablevia msrc

Product: Windows Server 2008 for x64-based Systems Service Pack 2Fixed in: 6.0.6003.21507

microsoftpatch availablevia msrc

Product: Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)Fixed in: 6.0.6003.21507

microsoftpatch availablevia msrc

Product: Windows Server 2012 (Server Core installation)Fixed in: 6.2.9200.23736

microsoftpatch availablevia msrc

Product: Windows 10 Version 1809 for 32-bit SystemsFixed in: 10.0.17763.3046

microsoftpatch availablevia msrc

Product: Windows 10 Version 1809 for x64-based SystemsFixed in: 10.0.17763.3046

microsoftpatch availablevia msrc

Product: Windows 10 Version 1809 for ARM64-based SystemsFixed in: 10.0.17763.3046

microsoftpatch availablevia msrc

Product: Windows Server 2019Fixed in: 10.0.17763.3046

microsoftpatch availablevia msrc

Product: Windows Server 2019 (Server Core installation)Fixed in: 10.0.17763.3046

microsoftpatch availablevia msrc

Product: Windows 10 Version 21H1 for x64-based SystemsFixed in: 10.0.19043.1766

microsoftpatch availablevia msrc

Product: Windows 10 Version 21H1 for ARM64-based SystemsFixed in: 10.0.19043.1766

microsoftpatch availablevia msrc

Product: Windows 10 Version 21H1 for 32-bit SystemsFixed in: 10.0.19043.1766

microsoftpatch availablevia msrc

Product: Windows 10 Version 21H2 for 32-bit SystemsFixed in: 10.0.19043.1766

microsoftpatch availablevia msrc

Product: Windows Server 2022Fixed in: 10.0.20348.770

microsoftpatch availablevia msrc

Product: Windows Server 2022 (Server Core installation)Fixed in: 10.0.20348.770

microsoftpatch availablevia msrc

Product: Windows 10 Version 20H2 for 32-bit SystemsFixed in: 10.0.19042.1766

microsoftpatch availablevia msrc

Product: Windows 10 Version 20H2 for ARM64-based SystemsFixed in: 10.0.19042.1766

microsoftpatch availablevia msrc

Product: Windows Server, version 20H2 (Server Core Installation)Fixed in: 10.0.19042.1766

microsoftpatch availablevia msrc

Product: Windows 11 version 21H2 for x64-based SystemsFixed in: 10.0.22000.739

microsoftpatch availablevia msrc

Product: Windows 11 version 21H2 for ARM64-based SystemsFixed in: 10.0.22000.739

microsoftpatch availablevia msrc

Product: Windows 10 Version 21H2 for ARM64-based SystemsFixed in: 10.0.19044.1766

microsoftpatch availablevia msrc

Product: Windows 10 Version 21H2 for x64-based SystemsFixed in: 10.0.19044.1766

microsoftpatch availablevia msrc

Product: Windows 10 for 32-bit SystemsFixed in: 10.0.10240.19325

microsoftpatch availablevia msrc

Product: Windows 10 for x64-based SystemsFixed in: 10.0.10240.19325

microsoftpatch availablevia msrc

Product: Windows 10 Version 1607 for 32-bit SystemsFixed in: 10.0.14393.5192

microsoftpatch availablevia msrc

Product: Windows 10 Version 1607 for x64-based SystemsFixed in: 10.0.14393.5192

microsoftpatch availablevia msrc

Product: Windows Server 2016Fixed in: 10.0.14393.5192

microsoftpatch availablevia msrc

Product: Windows Server 2016 (Server Core installation)Fixed in: 10.0.14393.5192

microsoftpatch availablevia msrc

Product: Windows 7 for 32-bit Systems Service Pack 1Fixed in: 6.1.7601.25984

microsoftpatch availablevia msrc

Product: Windows 7 for x64-based Systems Service Pack 1Fixed in: 6.1.7601.25984

microsoftpatch availablevia msrc

Product: Windows Server 2008 R2 for x64-based Systems Service Pack 1Fixed in: 6.1.7601.25984

microsoftpatch availablevia msrc

Product: Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)Fixed in: 6.1.7601.25984

microsoftpatch availablevia msrc

Product: Windows 8.1 for 32-bit systemsFixed in: 6.3.9600.20402

microsoftpatch availablevia msrc

Product: Windows 8.1 for x64-based systemsFixed in: 6.3.9600.20402

microsoftpatch availablevia msrc

Product: Windows Server 2012 R2Fixed in: 6.3.9600.20402

microsoftpatch availablevia msrc

Product: Windows Server 2012 R2 (Server Core installation)Fixed in: 6.3.9600.20402

microsoftpatch availablevia msrc

Product: Windows RT 8.1Fixed in: 6.3.9600.20402

microsoftpatch availablevia msrc

Product: Windows Server 2008 for 32-bit Systems Service Pack 2Fixed in: 6.0.6003.21507

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

redhatno patchvia redhat_api

Product: Red Hat Enterprise Linux 6Fixed in: microcode_ctl

Vendor Advisories (2)

microsoft2022-Jun/CVE-2022-21127Important

Intel: CVE-2022-21127 Special Register Buffer Data Sampling Update (SRBDS Update)

redhatCVE-2022-21127Moderate

hw: cpu: Incomplete cleanup in specific special register read operations (aka SRBDS update)

References

security.netapp.com / advisory/ntap-20220624-0008

Third Party Advisory

debian.org / security/2022/dsa-5178

Third Party Advisory

intel.com / content/www/us/en/security-center/advisory/intel-sa-00615.html

PatchVendor Advisory

openwall.com / lists/oss-security/2022/06/16/1

Mailing ListPatchThird Party Advisory