Cyber Resilience

CWE · MITRE source

CWE-440Expected Behavior Violation

Abstraction: Base · CVEs in our corpus: 43

A feature, API, or function does not perform according to its specification.

Last updated: 21 August 2026 14:15 UTC

Control responseHuman-reviewed

Answering this weakness across the control lifecycle, from our framework cross-walks.

Prevent
Stop it (NIST 800-53 / CSF Protect)
  • SI-6 Security and Privacy Function Verification
  • PR.PS-06
  • ID.RA-01
  • SA-11 Developer Testing and Evaluation
Detect
Catch it (CSF Detect / Respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)

—

NIST 800-53 r5 controls that address this weakness (1)AI-assisted

Control Title Family Why it addresses this CWE
SI-6Security and Privacy Function VerificationSIVerification of security function operation directly detects deviations from expected behavior.

Top CVEs of this weakness type, ranked by Risk Priority

CVE Risk CVSS EPSS Published
CVE-2021-41035 7.69.80.01822021-10-25
CVE-2019-6569 7.19.10.01332019-03-26
CVE-2025-8850 6.58.80.00412025-10-30
CVE-2018-12550 6.48.10.01352019-03-27
CVE-2024-32971 6.49.00.00732024-05-02
CVE-2019-5108 6.06.50.10112019-12-23
CVE-2022-3281 6.07.50.00702022-10-17
CVE-2023-4807 6.07.80.00862023-09-08
CVE-2024-30246 5.97.60.00622024-03-29
CVE-2023-32731 5.77.40.00502023-06-09
CVE-2023-6129 5.56.50.02322024-01-09
CVE-2019-5061 5.36.50.00912019-12-12
CVE-2023-2088 5.36.50.01202023-05-12
CVE-2019-5062 5.16.50.00542019-12-12
CVE-2025-6211 5.16.50.00312025-07-10
CVE-2025-52953 5.06.50.00292025-07-11
CVE-2026-427525.06.50.00222026-06-15
CVE-2023-32732 4.55.30.00532023-06-09
CVE-2024-47762 4.55.80.00372024-10-03
CVE-2026-42534 4.55.30.00582026-05-20
CVE-2020-10766 4.45.50.00472020-09-15
CVE-2020-10767 4.45.50.00372020-09-15
CVE-2020-10768 4.45.50.00402020-09-16
CVE-2025-27094 4.45.40.00352025-03-03
CVE-2025-3044 4.45.30.00282025-07-07