Actively exploited · Published Feb 14, 2023 · Assigned by microsoft

CVE-2023-23376Windows Common Log File System Driver Elevation of Privilege Vulnerability

High 7.8 Exploited Ransomware

In plain English

A high-severity heap buffer overflow in Windows 10 Version 1507 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on February 14, 2023). It has been used in ransomware campaigns. The chance it is exploited in the next 30 days is estimated at 10.9% (higher than 96% of all known vulnerabilities). Apply updates per vendor instructions.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)10.9%top 4.1% of all CVEs
Exploited in the wildYesCISA KEV since Feb 14, 2023
Attack toolingNoneno public tooling known

CISA guidance

Apply updates per vendor instructions.

Federal agencies must remediate by Mar 7, 2023.

Official description

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Affected products (as reported)

VendorProductVersions
Microsoft Windows 10 Version 1507 10.0.10240.0 – before 10.0.10240.19747
Microsoft Windows 10 Version 1607 10.0.14393.0 – before 10.0.14393.5717
Microsoft Windows 10 Version 1809 10.0.17763.0 – before 10.0.17763.4010
Microsoft Windows 10 Version 1809 10.0.0 – before 10.0.17763.4010
Microsoft Windows 10 Version 20H2 10.0.0 – before 10.0.19042.2604
Microsoft Windows 10 Version 21H2 10.0.19043.0 – before 10.0.19044.2604
Microsoft Windows 10 Version 22H2 10.0.19045.0 – before 10.0.19045.2604
Microsoft Windows 11 version 21H2 10.0.0 – before 10.0.22621.1574
Microsoft Windows 11 version 22H2 10.0.22621.0 – before 10.0.22621.1265
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – before 6.0.6003.21915
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 – before 6.1.7601.26366
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 – before 6.1.7601.26366
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – before 6.0.6003.21915
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 – before 6.0.6003.21915
Microsoft Windows Server 2012 6.2.9200.0 – before 6.2.9200.24116
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – before 6.2.9200.24116
Microsoft Windows Server 2012 R2 6.3.9600.0 – before 6.3.9600.20821
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – before 6.3.9600.20821
Microsoft Windows Server 2016 10.0.14393.0 – before 10.0.14393.5717
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – before 10.0.14393.5717
Microsoft Windows Server 2019 10.0.17763.0 – before 10.0.17763.4010
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – before 10.0.17763.4010
Microsoft Windows Server 2022 10.0.20348.0 – before 10.0.20348.1547

Weakness: CWE-122 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

References