Cyber Resilience

CWE · MITRE source

CWE-303Incorrect Implementation of Authentication Algorithm

Abstraction: Base · CVEs in our corpus: 100

The requirements for the product dictate the use of an established authentication algorithm, but the implementation of the algorithm is incorrect.

This incorrect implementation may allow authentication to be bypassed.

Last updated: 20 August 2026 20:22 UTC

Cumulative inbound coverage

How completely the frameworks we cross-walk collectively cover this — the verdict is the strongest single mapping (overlapping partials are not summed); breadth shows the corroboration behind it.

Collective: partial · 1 mapping(s) from 1 framework(s): CAPEC 1 (partial)

See the full cumulative-coverage rollup →

OWASP Top 10 for Web (2025)

This weakness contributes to A07:2025 Authentication Failures.

Control responseHuman-reviewed

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

Prevent
Stop it (NIST 800-53 / CSF Protect)
  • PR.PS-06
  • SA-11 Developer Testing and Evaluation
  • SA-15 Development Process, Standards, and Tools
  • IA-5 Authenticator Management
Detect
Catch it (CSF Detect / Respond)

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Harden
Shrink the surface (DISA STIG)

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Validate
Prove the fix (OWASP ASVS)

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NIST 800-53 r5 controls that address this weakness (0)AI-assisted

Control Title Family Why it addresses this CWE
No NIST controls proposed yet.

Top CVEs of this weakness type, ranked by Risk Priority

CVE Risk CVSS EPSS Published
CVE-2023-29357 KEV 9.99.80.99652023-06-14
CVE-2024-7593 KEV 9.99.80.99992024-08-13
CVE-2020-8863 9.18.80.76732020-03-23
CVE-2022-20695 8.610.00.19852022-04-15
CVE-2025-13390 8.010.00.04662025-12-03
CVE-2018-4841 7.99.80.04762018-03-29
CVE-2024-4985 7.79.80.02572024-05-20
CVE-2025-21311 7.79.80.02232025-01-14
CVE-2023-3326 7.59.80.01102023-06-22
CVE-2026-41103 7.59.10.05382026-05-12
CVE-2024-10127 7.49.80.00592024-11-20
CVE-2025-66489 7.49.80.00852025-12-03
CVE-2026-46595 7.410.00.00502026-05-22
CVE-2026-593097.49.80.00742026-07-30
CVE-2020-8861 7.38.80.06542020-02-22
CVE-2025-63210 7.39.80.00552025-11-19
CVE-2026-29515 7.39.80.00482026-03-11
CVE-2026-35579 7.39.80.00512026-05-05
CVE-2026-46389 7.310.00.00342026-06-05
CVE-2022-39366 7.29.90.00882022-10-28
CVE-2020-15632 7.18.80.03322020-07-23
CVE-2026-284467.19.40.00652026-03-05
CVE-2023-29129 7.09.10.00892023-06-13
CVE-2026-33557 7.09.10.00682026-04-20
CVE-2023-25957 6.99.10.00582023-03-14