XXE in Microsoft Windows 10
CVE-2019-0948
An information disclosure vulnerability exists in the Windows Event Viewer (eventvwr.msc) when it improperly parses XML input containing a reference to an external entity. An attacker who successfully exploited this vulnerability could read arbitrary files via an XML external entity (XXE) declaration. To exploit the vulnerability, an attacker could create a file containing specially crafted XML content and convince an authenticated user to import the file. The update addresses the vulnerability by modifying the way that the Event Viewer parses XML input.
Vulnerability class: XXE (XML External Entity)
EPSS: 0.127 (95.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N.
Affected products
- Microsoft Windows_10 — versions 1607, 1703, 1709
- Microsoft Windows 10 Version 1507 — versions 10.0.10240.0
- Microsoft Windows 10 Version 1607 — versions 10.0.14393.0
- Microsoft Windows 10 Version 1703 — versions 10.0.0
- Microsoft Windows 10 Version 1709 — versions 10.0.0
- Microsoft Windows 10 Version 1709 For 32-bit Systems — versions 10.0.0
- Microsoft Windows 10 Version 1803 — versions 10.0.0
- Microsoft Windows 10 Version 1809 — versions 10.0.17763.0, 10.0.0
- 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
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secure@microsoft.com (vendor-advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Patch, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2019-0948?
- CVE-2019-0948 is a medium-severity vulnerability in Microsoft Windows 10, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 4.7/10. Published 2019-06-12.
- How severe is CVE-2019-0948?
- Medium severity. CVSS v3 base score is 4.7 out of 10.
- Is CVE-2019-0948 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.