Is CVE-2022-21123 being actively exploited?

CVE-2022-21123 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2022-21123?

CVE-2022-21123 has a CVSS 3.1 base score of 5.5 (MEDIUM).

CVE-2022-21123

MEDIUM · CVSS 5.5EPSS 6.9%EU EUVD

Incomplete cleanup of multi-core shared buffers for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Key facts

CVSS score: 5.5 (v3.1)
Severity: MEDIUM
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-459
EPSS score: 6.9% (94th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2022-26372)
Published: June 15, 2022
NVD last modified: October 14, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2022-26372 in the EU Vulnerability Database. Last updated in EUVD on October 14, 2026.

View on the EU Vulnerability Database

Affected products

debian / debian linux
debian / debian linux
debian / debian linux
fedoraproject / fedora
fedoraproject / fedora
intel / sgx dcap
intel / sgx dcap
intel / sgx psw
intel / sgx psw
intel / sgx sdk
intel / sgx sdk
vmware / esxi
vmware / esxi
vmware / esxi
vmware / esxi
vmware / esxi
vmware / esxi
vmware / esxi
vmware / esxi
vmware / esxi
vmware / esxi
vmware / esxi
vmware / esxi
vmware / esxi
xen / xen

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

VMware ESXi 7.0 Update 3d - VMware Inc. - Common Criteria CCEVS-VR-VID-11249-2022 - archived

References

http://www.openwall.com/lists/oss-security/2022/06/16/1(Mailing List, Patch, Third Party Advisory)
https://cert-portal.siemens.com/productcert/html/ssa-794697.html
https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html(Mailing List, Third Party Advisory)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHTEW3RXU2GW6S3RCPQG4VNCZGI3TOSV/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MCVOMHBQRH4KP7IN6U24CW7F2D2L5KBS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4P2KJYL74KGLHE4JZETVW7PZH6ZIABA/
https://security.gentoo.org/glsa/202208-23(Third Party Advisory)
https://security.netapp.com/advisory/ntap-20220624-0008/(Third Party Advisory)
https://www.debian.org/security/2022/dsa-5173(Third Party Advisory)
https://www.debian.org/security/2022/dsa-5178(Third Party Advisory)
https://www.debian.org/security/2022/dsa-5184(Third Party Advisory)
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00615.html(Patch, Vendor Advisory)

Last updated October 16, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain