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Known exploited vulnerability · CISA KEV

CVE-2024-26169: Microsoft Windows Error Reporting Service Improper Privilege Management Vulnerability

Microsoft Windows Error Reporting Service contains an improper privilege management vulnerability that allows a local attacker with user permissions to gain SYSTEM privileges.

CVE-2024-26169

Exploited in the wild. Fix this first.

CISA added it to the Known Exploited Vulnerabilities catalog on 2024-06-13: attackers are using it right now. It is known to be used in ransomware campaigns.

CISA KEV
Listed
Added 2024-06-13 · federal fix-by 2024-07-04
EPSS (30 days)
4.0%
Higher than 90% of CVEs · 2026-11-01
CVSS v3.1
7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What CISA says

Microsoft Windows Error Reporting Service Improper Privilege Management Vulnerability

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

NVD description · published 2024-03-12

Windows Error Reporting Service Elevation of Privilege Vulnerability

Full record on NVD

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How to check if you are exposed to CVE-2024-26169

  1. Find every Microsoft Windows system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
  2. Compare each version with the fixed versions in the vendor advisory below. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
  3. Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2024-26169.

US federal agencies had to fix this by 2024-07-04. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.

Affected versions

Versions the National Vulnerability Database lists as vulnerable to CVE-2024-26169. Check the vendor advisory for the exact fixed builds before you sign anything off.

ProductVulnerable versions
Microsoft Windows 10 1507before 10.0.10240.20526
Microsoft Windows 10 1607before 10.0.14393.6796
Microsoft Windows 10 1809before 10.0.17763.5576
Microsoft Windows 10 21h2before 10.0.19044.4170
Microsoft Windows 10 22h2before 10.0.19045.4170
Microsoft Windows 11 21h2before 10.0.22000.2836

NVD lists 8 more affected products; see the full record on NVD.

Timeline

  1. · Published in the National Vulnerability Database
  2. · Added to CISA's Known Exploited Vulnerabilities catalog, 93 days after it was published
  3. · Fix-by date for US federal agencies, passed 850 days ago

Vendor advisories and fixes

Weakness type

More exploited Microsoft vulnerabilities

CISA lists 390 exploited Microsoft vulnerabilities. The closest matches:

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Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.

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