STIGQter: STIG Summary: Microsoft Windows Server 2025 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 01 Jul 2026:

Windows Server 2025 Security event log size must be configured to a value that holds at least one week of audit records.

DISA Rule

SV-278106r1211154_rule

Vulnerability Number

V-278106

Group Title

SRG-OS-000341-GPOS-00132

Rule Version

WN25-CC-000280

Severity

CAT II

CCI(s)

• CCI-001849 - Allocate audit log storage capacity to accommodate organization-defined audit record retention requirements.

Weight

10

Fix Recommendation

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Event Log Service >> Security >> Specify the maximum log file size (KB) to "Enabled" with a "Maximum Log Size (KB)" of a value that will contain one week of audit records or greater.

Note: The registry entry value in the Check is an example; the value must equal at least one week's worth of records in the environment.

Check Contents

If the system is configured to write events directly to an audit server, this is not applicable.

The registry configuration setting below must be set (at least) to a value equal to the size needed to contain one week's worth of audit records in the security event log.

The value used below is an example that assumes a typical week’s log size of 5GB.

If a registry value does not exist or is not configured to hold one week of records, this is a finding:

Note: The following registry entry is an example; the value must equal at least one week's worth of records in the environment.

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows\EventLog\Security\

Value Name: MaxSize

Type: REG_DWORD
Value: 0x4E2000 (5120000) (or greater)

Vulnerability Number

V-278106

Documentable

False

Rule Version

WN25-CC-000280

Severity Override Guidance

If the system is configured to write events directly to an audit server, this is not applicable.

The registry configuration setting below must be set (at least) to a value equal to the size needed to contain one week's worth of audit records in the security event log.

The value used below is an example that assumes a typical week’s log size of 5GB.

If a registry value does not exist or is not configured to hold one week of records, this is a finding:

Note: The following registry entry is an example; the value must equal at least one week's worth of records in the environment.

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows\EventLog\Security\

Value Name: MaxSize

Type: REG_DWORD
Value: 0x4E2000 (5120000) (or greater)

Check Content Reference

M

Target Key

5719