Vulnerability in Microsoft Windows 10
CVE-2020-16877
<p>An elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse points. An attacker who successfully exploited this vulnerability could overwrite or delete a targeted file that would normally require elevated permissions.</p> <p>To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and overwrite or delete files.</p> <p>The security update addresses the vulnerability by correcting how Windows handles reparse points.</p>
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (60.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Microsoft Windows 10 — versions 1903, 1909, 2004
- Microsoft Windows 10 Version 1903 For 32-Bit Systems — versions 10.0.0
- Microsoft Windows 10 Version 1903 For Arm64-Based Systems — versions 10.0.0
- Microsoft Windows 10 Version 1903 For X64-Based Systems — versions 10.0.0
- Microsoft Windows 10 Version 1909 — versions 10.0.0
- Microsoft Windows 10 Version 2004 — versions 10.0.0
- Microsoft Windows Server 2016 — versions 1903, 1909, 2004
- Microsoft Windows Server, Version 1903 (Server Core Installation) — versions 10.0.0
- Microsoft Windows Server, Version 1909 (Server Core Installation) — versions 10.0.0
- Microsoft Windows Server Version 2004 — versions 10.0.0
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16877 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-16877?
- CVE-2020-16877 is a high-severity vulnerability in Microsoft Windows 10. CVSS score: 7.1/10. Published 2020-10-16.
- How severe is CVE-2020-16877?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2020-16877 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.