CVE-2021-40449
At a glance
- Severity
- HIGH 7.8
- Exploitation
- Known exploited (CISA KEV) · added 2021-11-17
Exploited per ENISA since 2021-11-17 - EPSS
- EPSS 81.94 % · percentile 100 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Analyzed
Description
Win32k Elevation of Privilege Vulnerability
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C | microsoft |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · secure@microsoft.com (Secondary) |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Secondary) |
| CVSS 2.0 | MEDIUM 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2021-27626
- GCVE · GCVE-0-2021-40449
CERT-FR advisories
- CERTFR-2021-AVI-782 — Multiples vulnérabilités dans Microsoft Windows · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:*:*< 10.0.10240.19086cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:*:*< 10.0.14393.4704cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*< 10.0.17763.2237cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:*< 10.0.18363.1854cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:*< 10.0.19041.1288cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*< 10.0.19041.1288cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:*< 10.0.19041.1288cpe:2.3:o:microsoft:windows_11:*:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:*< 10.0.22000.258cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:*< 10.0.19041.1288cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*< 10.0.14393.4704cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*< 10.0.17763.2237cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*< 10.0.20348.288cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:*< 10.0.19042.1288
Affected products
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40449
- http://packetstormsecurity.com/files/164926/Win32k-NtGdiResetDC-Use-After-Free-Local-Privilege-Escalation.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40449
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| CISA Known Exploited Vulnerabilities | CC0 1.0 |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |