Windows Error Reporting Service Elevation of Privilege Vulnerability

cisa required action Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

1. 2024-03-12 Published
2. 2024-06-13 Added to CISA KEV
3. 2024-06-14 CISA SSVC: exploitation active
4. 2024-07-04 CISA patch deadline

Added

2 y ago (2024-06-13)

Patch by

2024-07-04 (2 y ago)

Ransomware

Known to be used in ransomware campaigns

Required action

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

Vendor, product

Microsoft, Windows

CISA name

Microsoft Windows Error Reporting Service Improper Privilege Management Vulnerability

Groups reported to have exploited it in intrusions.

• Black Basta ransomware gang

reported by security.comsecurityonline.info

Ransomware Vulnerability Matrix by BushidoUK (github.com/BushidoUK/Ransomware-Vulnerability-Matrix), reformatted per CVE. CC BY 4.0

How it is exploited and what it leads to, in MITRE ATT&CK terms.

• T1112 Modify Registry exploitation
• T1203 Exploitation for Client Execution exploitation
• T1059 Command and Scripting Interpreter primary impact

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

Exploitation

Active, exploited in the wild

Automatable

no

Technical impact

total

Assessed

2 y ago (2024-06-14)

4.01% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

• Microsoft Windows 10 Version 1809
• Microsoft Windows Server 2019
• Microsoft Windows Server 2019 (Server Core installation)
• Microsoft Windows Server 2022
• Microsoft Windows 11 version 21H2
• Microsoft Windows 10 Version 21H2
• Microsoft Windows 11 version 22H2
• Microsoft Windows 10 Version 22H2
• Microsoft Windows 11 version 22H3
• Microsoft Windows 11 Version 23H2
• Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
• Microsoft Windows 10 Version 1507
• Microsoft Windows 10 Version 1607
• Microsoft Windows Server 2016
• Microsoft Windows Server 2016 (Server Core installation)
• Microsoft Windows Server 2012 R2
• Microsoft Windows Server 2012 R2 (Server Core installation)

Weakness

• CWE-269 Improper Privilege Management

• msrc.microsoft.com /update-guide/vulnerability/CVE-2024-26169

  vendor-advisory, patch

• cisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-26169

  government-resource, us-government-resource

• CVE List CVE-2024-26169
• NVD CVE-2024-26169

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.