7.8

CVE-2019-0863: Microsoft Windows Error Reporting (WER) Privilege Escalation Vulnerability

CVSS: 7.8v3.1HighKEVAnalyzed
Published 16-05-2019Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2019-0863 is a high (CVSS 7.8) vulnerability in Microsoft Windows. It is known to be exploited: CISA lists it, first on 03-11-2021. EPSS estimates a 5.21% chance of exploitation in the next 30 days, higher than 92.4% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
85/100
0100
Critical · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
5.21%
0%100%
Low · 0.00 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits1exploit-database

Timeline

  1. 16-05-2019
    PublishedVulnerability first disclosed.
  2. 03-11-2021
    Added to CISA KEVMicrosoft Windows Error Reporting (WER) Privilege Escalation Vulnerability
  3. 03-05-2022
    CISA remediation dueApply updates per vendor instructions.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

Description

An elevation of privilege vulnerability exists in the way Windows Error Reporting (WER) handles files, aka 'Windows Error Reporting Elevation of Privilege Vulnerability'.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

5.21%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

0.00 pp

From 5.21% on 20-09-2026

20-09-202620-10-2026
EPSS score
5.21%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
03-11-2021
Federal due date
03-05-2022

CISA required action

Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2019-0863

Public exploits

1 found
  • exploit-databaselocalwindowsUnverified

    Microsoft Windows (x86/x64) - 'Error Reporting' Discretionary Access Control List / Local Privilege Escalation

    Maturity: poc

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Microsoft22 products
  • windowsEOL7 for 32-bit Systems Service Pack 1 | 7 for x64-based Systems Service Pack 1 | 8.1 for 32-bit systems | 8.1 for x64-based systems | RT 8.1 | 10 for 32-bit Systems | 10 for x64-based Systems | 10 Version 1607 for 32-bit Systems | 10 Version 1607 for x64-based Systems | 10 Version 1703 for 32-bit Systems | 10 Version 1703 for x64-based Systems | 10 Version 1709 for 32-bit Systems | 10 Version 1709 for x64-based Systems | 10 Version 1803 for 32-bit Systems | 10 Version 1803 for x64-based Systems | 10 Version 1803 for ARM64-based Systems | 10 Version 1809 for 32-bit Systems | 10 Version 1809 for x64-based Systems | 10 Version 1809 for ARM64-based Systems | 10 Version 1709 for ARM64-based Systems
  • windows_10_1507na
  • windows_10_1607na
  • windows_10_1703na
  • windows_10_1709na

1 vendor · 22 products

References

3 links