CVE-2019-0863KEV · OVERDUE

Microsoft Windows Error Reporting (WER) Privilege Escalation Vulnerability

High · published May 16, 2019

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 7.8. It is confirmed in active exploitation. It sits in the 92.5th percentile for exploit probability.

1634
days past CISA
deadline
CVSS v3.1
7.8
EPSS
5%
Percentile
92.5
In the wild
Confirmed
What it is

🚨 An attacker can gain elevated privileges through a sneaky exploit in Windows Error Reporting! 🔥 Think of Windows Error Reporting as a delivery service for bug reports. If the delivery person doesn’t check the package contents, a mischievous package can get delivered that grants the attacker access to locked areas of your system, just like a delivery slip that lets someone into a secure building without authorization. If exploited, this vulnerability allows an attacker to execute malicious code with elevated privileges, potentially leading to unauthorized data access or even complete control of the affected system. Imagine a burglar who not only breaks in but also unlocks all the secure rooms, wreaking havoc with your data and systems!

Put simply

Think of Windows Error Reporting as a delivery service for bug reports. If the delivery person doesn’t check the package contents, a mischievous package can get delivered that grants the attacker access to locked areas of your system, just like a delivery slip that lets someone into a secure building without authorization. The Windows Error Reporting Elevation of Privilege Vulnerability allows attackers to manipulate file handling in WER, which can be exploited to gain higher access rights than normally permitted by the system.

What to do

If exploited, this vulnerability allows an attacker to execute malicious code with elevated privileges, potentially leading to unauthorized data access or even complete control of the affected system. Imagine a burglar who not only breaks in but also unlocks all the secure rooms, wreaking havoc with your data and systems! To protect your system, ensure you apply the latest security updates from Microsoft immediately. Monitor affected systems for unusual activities and consider implementing user access controls to mitigate potential risks. Don’t wait—act now! You’ve got this! By taking these steps, you’re protecting your systems like a security hero. 🛡️

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.05207 · 92.5th percentile
Published
2019-05-16T18:17Z
KEV added
2021-11-03 · due 2022-05-03
EPSS history
Timeline
  • 03 NOV 00:00Z
    Added to CISA KEV — remediate by May 3
    kev
  • 16 MAY 18:17Z
    An elevation of privilege vulnerability exists in the way Windows Error Reporting (WER) handles files, aka 'Windows Error Reporting Elevation of Privilege…
    cvelistv5