What is CVE-2020-17103?
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
The record classifies CVE-2020-17103 under weakness class CWE-269. Its CVSS v3 base vector states that the flaw requires local access to the host, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 3 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 2160 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 7 — HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - EPSS (FIRST)
- 26.5% probability of exploitation in the next 30 days, higher than 97.9% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 9.4/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2020-12-09, last modified 2026-06-10
Is CVE-2020-17103 being exploited?
Weaponised exploit code for CVE-2020-17103 is publicly available. 7 public proof-of-concept repositories are tracked for this identifier. It currently carries a trending score of 42 in the Threadlinqs vulnerability feed.
- AlexLinov/MiniPlasma-Runner (github)
- CaptainChicky/MiniPlasma (github)
- mohammadzarnian1357/MiniPlasma (github)
- arch1m3d/MiniPlasma-Detection (github)
- rfranca777/miniplasma-advisory (github)
- 0xBlackash/CVE-2020-17103 (github)
- trickest/cve (trickest)
Affected products and versions
- Microsoft: Windows 10, Windows Server 2016, Windows Server 2019
How to fix CVE-2020-17103
The record marks a vendor fix as available for CVE-2020-17103. Patch reference: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17103. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.
Threat activity tracking CVE-2020-17103
3 tracked threats in the Threadlinqs corpus reference CVE-2020-17103, either in the campaign’s CVE list or as an indicator on the campaign record.
- Microsoft Analysis: 78% of Exploited Vulnerabilities Enable System Takeover and Privilege Escalation — MEDIUM · 2026-11-04
- NightmareEclipse Coordinated Disclosure Breach Campaign: 9+ Windows Zero-Days (CVE-2026-33825, CVE-2026-41091, CVE-2026-45498, CVE-2026-45585, CVE-2026-45586) Dumped Outside Responsible Disclosure and Weaponized in Real-World Intrusions — CRITICAL · 2026-08-04
- Windows 'MiniPlasma' Zero-Day — Unpatched SYSTEM LPE via cldflt.sys HsmOsBlockPlaceholderAccess / CfAbortHydration (CVE-2020-17103 Regression) — HIGH · 2026-05-17
Sources
Enriched from CVE.org, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on .