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CVE-2022-21166Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an authenticated user to…
- 5.5MediumCVSS base score
- 6.5%Exploitation in 30 daysEPSS · top 6.2% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.
Timeline
ID reserved
By intel
- 7 months later
· 7 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 6.5% · top 6.2% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
Intel(R) Processors
- affected See references
References
References13
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00615.html (opens in a new tab)x_refsource_MISCx_transferred
- [oss-security] 20220616 Xen Security Advisory 404 v2 (CVE-2022-21123,CVE-2022-21125,CVE-2022-21166) - x86: MMIO Stale Data vulnerabilities (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2022-391e24517d (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2022-177a008b98 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://security.netapp.com/advisory/ntap-20220624-0008/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2022-925fc688c1 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- [debian-lts-announce] 20220701 [SECURITY] [DLA 3065-1] linux security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- DSA-5173 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- DSA-5178 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- DSA-5184 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- FEDORA-2022-2c9f8224f8 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- GLSA-202208-23 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-26409 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2022-21166)Record last updated .