Cyber Posture

NIST 800-53 r5 · Controls catalogue · Family IA

IA-6Authentication Feedback

Obscure feedback of authentication information during the authentication process to protect the information from possible exploitation and use by unauthorized individuals.

Last updated: 19 May 2026 14:18 UTC

Implementations targeting this control (0)

ATT&CK techniques this control mitigates (8)

Weaknesses this control addresses (3)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-200Exposure of Sensitive Information to an Unauthorized Actor10,259Obscuring authentication feedback prevents exposure of sensitive information such as valid usernames or failure reasons to unauthorized actors.
CWE-209Generation of Error Message Containing Sensitive Information648The control directly mitigates generation of error messages containing sensitive authentication details by requiring obscured feedback instead of verbose responses.
CWE-549Missing Password Field Masking15Obscuring feedback includes masking password input (e.g., asterisks), which addresses the weakness of missing password field masking.

Top CVEs where this control is the strongest mitigation

CVE Risk CVSS EPSS Match
CVE-2016-200302.09.80.0004good
CVE-2025-312291.89.10.0013good
CVE-2025-22771.57.50.0030good
CVE-2025-124551.57.50.0005good
CVE-2026-252221.57.50.0004good
CVE-2025-240113.25.30.3516good
CVE-2025-129951.68.10.0009partial
CVE-2025-151031.68.10.0012good
CVE-2026-334191.57.50.0002good
CVE-2026-4113 UPD1.47.20.0010good
CVE-2025-584343.99.80.3255good
CVE-2026-62841.89.10.0002partial
CVE-2026-345781.78.20.0022good

Other controls in family IA

IA-1 IA-10 IA-11 IA-12 IA-13 IA-2 IA-3 IA-4 IA-5 IA-7 IA-8 IA-9