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Vulnerability Intelligence

CVE-2023-23376

HighExploitedPublic exploit

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Published Feb 14, 2023 · Updated Aug 19, 2026

Key Facts

Patch immediately
  • CVE-2023-23376 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting Windows 10 1507 (Microsoft), Windows 10 1607 (Microsoft), Windows 10 1809 (Microsoft) and 22 more products.
  • It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Feb 14, 2023 and is known to be used in ransomware campaigns. Public exploit code is available.
  • EPSS estimates a 11% probability of exploitation in the next 30 days.
  • Fixed versions are available, including Windows 10 1507 10.0.10240.19747, Windows 10 1607 10.0.14393.5717, Windows 10 1809 10.0.17763.4010.
  • Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

7.8

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

11%

Higher than 95.8% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings, used by ransomware

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2023-23376 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Known-Exploited Catalog Listings

CatalogAddedRemediation dueRansomware use
CISA KEVFeb 14, 2023Mar 7, 2023Known
Industry KEV feedFeb 14, 2023Mar 7, 2023Known
CIRCL KEVFeb 14, 2023Mar 7, 2023Known
ENISA EUVDFeb 14, 2023n/aNot reported

Required action: Apply updates per vendor instructions.

Affected Products

51 affected entries in total
ProductAffected versionsFixed in
Windows 10 1507MicrosoftSee advisory10.0.10240.19747
Windows 10 1607MicrosoftSee advisory10.0.14393.5717
Windows 10 1809MicrosoftSee advisory10.0.17763.4010
windows 10 20H2MicrosoftSee advisory10.0.19042.2604
windows 10 21H2MicrosoftSee advisory10.0.19044.2604
20 more affected products in the full CVE brief

Patched Releases

Windows 10 1507

10.0.10240.19747

Windows 10 1607

10.0.14393.5717

Windows 10 1809

10.0.17763.4010

windows 10 20H2

10.0.19042.2604

windows 10 21H2

10.0.19044.2604

windows 10 22H2

10.0.19045.2604

windows 11 21H2

10.0.22000.1574, 10.0.22621.1574

windows 11 22H2

10.0.22621.1265

windows server 2008 R2

6.1.7601.26366

Windows Server 2008 Sp2

6.0.6003.21915

Windows Server 2012

6.2.9200.24116

windows server 2012 R2

6.3.9600.20821

Windows Server 2016

10.0.14393.5717

Windows Server 2019

10.0.17763.4010

Windows Server 2022

10.0.20348.1540, 10.0.20348.1547

Windows 10 Version 1507

10.0.10240.19747

Windows 10 Version 1607

10.0.14393.5717

Windows 10 Version 1809

10.0.17763.4010

Windows 10 Version 20H2

10.0.19042.2604

Windows 10 Version 21H2

10.0.19044.2604

Windows 10 Version 22H2

10.0.19045.2604

Windows 11 version 21H2

10.0.22621.1574

Windows 11 version 22H2

10.0.22621.1265

Windows Server 2008 Service Pack 2

6.0.6003.21915

Windows Server 2008 R2 Service Pack 1

6.1.7601.26366

Timeline

  1. Publicly disclosed

    Feb 14, 2023

  2. Added to CISA KEV

    Feb 14, 2023

  3. Added to Industry KEV feed

    Feb 14, 2023

  4. Added to CIRCL KEV

    Feb 14, 2023

  5. Added to ENISA EUVD

    Feb 14, 2023

  6. Last updated

    Aug 19, 2026

Weakness Type

  • CWE-122 Heap-based Buffer Overflow
  • CWE-787 Out-of-bounds Write

References

4 more references in the full CVE brief

FAQ

Common Questions.

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