Cyber Posture

NIST 800-53 r5 · Controls catalogue · Family SI

SI-9Information Input Restrictions

Information Input Restrictions

Last updated: 09 May 2026 03:25 UTC

Implementations targeting this control (0)

ATT&CK techniques this control mitigates (0)

Weaknesses this control addresses (8)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-862Missing Authorization8,680Prevents missing authorization checks for input operations by restricting the capability itself.
CWE-284Improper Access Control4,832Directly enforces access control by limiting input capability exclusively to authorized personnel.
CWE-863Incorrect Authorization3,234Reduces incorrect authorization decisions by gating all input at the personnel/process level.
CWE-306Missing Authentication for Critical Function2,567Ensures critical input functions cannot be reached without prior authorization.
CWE-285Improper Authorization1,230Implements authorization checks on who may supply information to the system.
CWE-425Direct Request ('Forced Browsing')255Blocks unauthorized direct requests or forced browsing by denying input access to non-authorized actors.
CWE-807Reliance on Untrusted Inputs in a Security Decision74Reduces reliance on untrusted inputs by ensuring only authorized sources may supply data.
CWE-642External Control of Critical State Data18Limits external actors' ability to control critical state through input channels.

Top CVEs where this control is the strongest mitigation

CVE Risk CVSS EPSS Match
CVE-2026-276363.18.80.2242good
CVE-2025-526360.41.80.0003good
CVE-2025-74416.79.80.7894good
CVE-2015-101386.09.80.6754good
CVE-2013-100325.48.80.6065good
CVE-2025-145585.17.20.6137good
CVE-2024-574874.06.50.4510good
CVE-2024-131713.47.80.3033good
CVE-2025-681093.39.10.2544good
CVE-2024-487602.79.80.1221good
CVE-2025-641282.510.00.0832partial
CVE-2025-555912.59.80.0955partial
CVE-2025-229062.19.80.0218good
CVE-2024-575952.19.80.0237good
CVE-2025-145322.09.80.0025good
CVE-2019-254592.09.80.0015partial
CVE-2020-371862.09.80.0014good
CVE-2020-370902.09.80.0104good
CVE-2025-698282.010.00.0039good
CVE-2025-673252.09.80.0029good
CVE-2022-509122.09.80.0020good
CVE-2024-89582.09.80.0127good
CVE-2024-506602.09.80.0113good
CVE-2026-404532.09.90.0019good
CVE-2026-321692.010.00.0010good

Other controls in family SI

SI-1 SI-10 SI-11 SI-12 SI-13 SI-14 SI-15 SI-16 SI-17 SI-18 SI-19 SI-2 SI-20 SI-21 SI-22 SI-23 SI-3 SI-4 SI-5 SI-6 SI-7 SI-8