STIGQter: STIG Summary: Cisco ISE NAC Security Technical Implementation Guide Version: 2 Release: 4 Benchmark Date: 01 Jul 2026:

The Cisco ISE must verify anti-malware software is installed and up to date on posture required clients defined in the NAC System Security Plan (SSP) prior to granting trusted network access. This is required for compliance with C2C Step 4.

DISA Rule

SV-242579r1168085_rule

Vulnerability Number

V-242579

Group Title

SRG-NET-000015-NAC-000020

Rule Version

CSCO-NC-000050

Severity

CAT I

CCI(s)

• CCI-000213 - Enforce approved authorizations for logical access to information and system resources in accordance with applicable access control policies.

Weight

10

Fix Recommendation

If required by the NAC SSP, configure the posture policy to verify an anti-malware software is up to date. Check the applicable STIG for the operating system to match the value needed for the virus definition file date.

1. Navigate to Work Centers >> Posture >> Policy Elements.
2. Create Anti-Malware Condition.
a. Expand "Conditions" on the left of the page.
b. Choose "Anti-Malware".
c. Choose "Add".
d. Define a Name.
e. Select the Operating System.
f. Select the vendor.
g. Check "Definition".
h. Check "Check against latest AV definition file version if available. Otherwise, check against latest definition file date or "Allow virus definition file to be (<7) days older than the current system date."
i. Select the desired product/products.
j. Choose "Submit".
3. Create Anti-Malware Remediation.
a. Expand "Remediations" on the left of the page.
b. Choose "Anti-Malware".
c. Choose "Add".
d. Define a Name.
e. Select the Operating System.
f. Select the Remediation Type.
g. Define the interval between retries.
h. Define Retry Count.
i. Select the desired Vendor Name.
j. Select the Product Name.
k. Choose "Submit".
4. Edit the Posture Policy.
a. Navigate to Work Centers >> Posture >> Posture Policy.
b. Find the Posture Policy that will be applied to the posture required endpoints.
c. Select the Requirement, ensuring there is a green check box to the left of the name indicating it is a mandatory requirement.
d. Choose "Done".
e. Choose "Save".

Note: If any other Definition option is used, the Posture Updates must be updated (Navigate to Work Centers >> Posture >> Settings >> Software Updates >> Posture Updates).

Configure the posture policy to verify that an anti-malware software is installed.
1. Navigate to Work Centers >> Posture >> Policy Elements.
2. Create Anti-Malware Condition.
a. Expand "Conditions" on the left of the page.
b. Choose "Anti-Malware".
c. Choose "Add".
d. Define a Name.
e. Select the Operating System.
f. Select the vendor.
g. Check "Installation".
h. Select the desired product/products.
i. Choose "Submit".
3. Create Anti-Malware Remediation.
a. Expand "Remediations" on the left of the page.
b. Choose "Anti-Malware".
c. Choose "Add".
d. Define a Name.
e. Select the Operating System.
f. Select the Remediation Type.
g. Define the interval between retries.
h. Define Retry Count.
i. Select the desired Vendor Name.
j. Check "Remediation Option is to enable the Firewall".
k. Select the Product Name.
l. Choose "Submit".
4. Edit the Posture Policy.
a. Navigate to Work Centers >> Posture >> Posture Policy.
b. Find the Posture Policy that will be applied to the posture required endpoints.
c. Select the Requirement, ensuring there is a green check box to the left of the name indicating it is a mandatory requirement.
d. Choose "Done".
e. Choose "Save".

Check Contents

If DOD is not at C2C Step 4 or higher, this is not a finding.

Verify the posture policy will verify that anti-malware software is installed and up to date.

If not required by the NAC SSP, this is not a finding.

1. Navigate to Work Center >> Posture >> Posture Policy.
2. Check the enabled posture policies analyzing all the conditions.
3. Review the requirements listed on polices the posture required clients will use.
4. Navigate to Work Center >> Posture >> Policy Elements.
5. Review the requirements applied in the posture policy to verify anti-malware conditions have been applied.
6. Review the anti-malware conditions, to determine if one is configured to verify that the software is installed, and one is configured to verify the software is up to date.

If this requirement is met by another system or application, this is not applicable.

If there is not a firewall condition tied to a requirement applied to an applicable posture policy, this is a finding.

Vulnerability Number

V-242579

Documentable

False

Rule Version

CSCO-NC-000050

Severity Override Guidance

If DOD is not at C2C Step 4 or higher, this is not a finding.

Verify the posture policy will verify that anti-malware software is installed and up to date.

If not required by the NAC SSP, this is not a finding.

1. Navigate to Work Center >> Posture >> Posture Policy.
2. Check the enabled posture policies analyzing all the conditions.
3. Review the requirements listed on polices the posture required clients will use.
4. Navigate to Work Center >> Posture >> Policy Elements.
5. Review the requirements applied in the posture policy to verify anti-malware conditions have been applied.
6. Review the anti-malware conditions, to determine if one is configured to verify that the software is installed, and one is configured to verify the software is up to date.

If this requirement is met by another system or application, this is not applicable.

If there is not a firewall condition tied to a requirement applied to an applicable posture policy, this is a finding.

Check Content Reference

M

Target Key

5383