Cyber Posture

NIST 800-53 r5 · Controls catalogue · Family IA

IA-9Service Identification and Authentication

Uniquely identify and authenticate {{ insert: param, ia-09_odp }} before establishing communications with devices, users, or other services or applications.

Last updated: 09 May 2026 03:25 UTC

Implementations targeting this control (0)

ATT&CK techniques this control mitigates (22)

Weaknesses this control addresses (5)AI

CWEs ranked by how often they appear in real CVEs. The rationale describes how this control reduces exploitability of each weakness class.

CWE Name CVEs Why this control addresses it
CWE-287Improper Authentication4,730Requires unique identification and authentication of services before any communications, directly mitigating improper authentication.
CWE-306Missing Authentication for Critical Function2,567Mandates authentication prior to establishing communications with services, preventing missing authentication for this critical function.
CWE-290Authentication Bypass by Spoofing631Unique identification and authentication of services before communications makes spoofing of service identities substantially harder.
CWE-346Origin Validation Error548Requires unique identification of the service before communications, addressing failures to validate the origin of the interaction.
CWE-940Improper Verification of Source of a Communication Channel45Enforces verification of the source of a communication channel by requiring identification and authentication of services first.

Top CVEs where this control is the strongest mitigation

CVE Risk CVSS EPSS Match
CVE-2025-203581.99.40.0039good
CVE-2026-349531.89.10.0001good
CVE-2026-321731.78.60.0006good
CVE-2025-272561.78.30.0001good
CVE-2026-49841.68.20.0004good
CVE-2024-113221.57.50.0075good
CVE-2023-529551.36.50.0010good
CVE-2026-356221.25.90.0006good
CVE-2025-689262.69.80.1061good
CVE-2026-20392.09.80.0036good
CVE-2026-241242.09.80.0011good
CVE-2025-633892.09.80.0019good
CVE-2026-25772.010.00.0008good
CVE-2025-271292.09.80.0019good
CVE-2025-155731.99.40.0001good
CVE-2024-239431.89.10.0043good
CVE-2026-349521.89.10.0002good
CVE-2024-417241.78.70.0008good
CVE-2026-44361.78.60.0006good
CVE-2025-276161.78.50.0008good
CVE-2024-127571.78.60.0028good
CVE-2026-261251.78.60.0009good
CVE-2026-394291.68.20.0008good
CVE-2025-412581.68.00.0009good
CVE-2026-284581.68.10.0008good

Other controls in family IA

IA-1 IA-10 IA-11 IA-12 IA-13 IA-2 IA-3 IA-4 IA-5 IA-6 IA-7 IA-8