STIGQter: STIG Summary: Forescout Network Access Control Security Technical Implementation Guide Version: 2 Release: 5 Benchmark Date: 01 Jul 2026:

Forescout must reveal error messages only to the Information System Security Officer (ISSO), Information System Security Manager (ISSM), and System Administrator (SA). This is required for compliance with C2C Step 1.

DISA Rule

SV-233328r811406_rule

Vulnerability Number

V-233328

Group Title

SRG-NET-000273-NAC-000970

Rule Version

FORE-NC-000210

Severity

CAT II

CCI(s)

• CCI-001312 - Generates error messages that provide information necessary for corrective actions without revealing information that could be exploited.

Weight

10

Fix Recommendation

Use the Forescout Administrator UI to configure the individuals authorized by the SSP to receive error messages.

1. Log on to the Forescout UI.
2. Within the highlighted policy, under the Actions section, select "Add" or "Edit".
3. Find the Notify section and select from any one of the below options for notifying authorized (IAW SSP) personnel:
- HTTP Notification
- Send Email
- Send Notification

Check Contents

If DoD is not at C2C Step 1 or higher, this is not a finding.

Use the Forescout Administrator UI to verify only individuals authorized by the SSP are configured to receive error messages.

1. Log on to the Forescout UI.
2. Within the highlighted policy, under the Actions section, select a configured action to view.
3. Find the Notify section and verify that only authorized individuals (IAW the SSP) are configured for the following:
- HTTP Notification
- Send Email
- Send Notification

If Forescout error messages can be viewed by unauthorized users other than the security personnel that have a need to know, this is a finding.

Vulnerability Number

V-233328

Documentable

False

Rule Version

FORE-NC-000210

Severity Override Guidance

If DoD is not at C2C Step 1 or higher, this is not a finding.

Use the Forescout Administrator UI to verify only individuals authorized by the SSP are configured to receive error messages.

1. Log on to the Forescout UI.
2. Within the highlighted policy, under the Actions section, select a configured action to view.
3. Find the Notify section and verify that only authorized individuals (IAW the SSP) are configured for the following:
- HTTP Notification
- Send Email
- Send Notification

If Forescout error messages can be viewed by unauthorized users other than the security personnel that have a need to know, this is a finding.

Check Content Reference

M

Target Key

5250