CVE-2021-1647
At a glance
- Severity
- HIGH 7.8
- Exploitation
- Known exploited (CISA KEV) · added 2021-11-03
Exploited per ENISA since 2021-11-03 - EPSS
- EPSS 39.65 % · percentile 99 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Analyzed
Description
Microsoft Defender Remote Code Execution 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:P/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 | HIGH 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-7114
- GCVE · GCVE-0-2021-1647
CERT-FR advisories
- CERTFR-2021-AVI-029 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
- CERTFR-2021-AVI-027 — Multiples vulnérabilités dans Microsoft Windows · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:microsoft:windows_defender:-:*:*:*:*:*:*:*cpe:2.3:a:microsoft:security_essentials:-:*:*:*:*:*:*:*cpe:2.3:a:microsoft:system_center_endpoint_protection:-:*:*:*:*:*:*:*cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:-:*:*:*:*:*:*cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:r2:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Microsoft · Microsoft System Center Endpoint Protection | affected N/A |
| Microsoft · Microsoft System Center 2012 R2 Endpoint Protection | affected N/A |
| Microsoft · Microsoft Security Essentials | affected N/A |
| Microsoft · Microsoft System Center 2012 Endpoint Protection | affected N/A |
| Microsoft · Windows Defender | affected N/A |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1647
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1647
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1647
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 |