CWE · MITRE source
CWE-303Incorrect Implementation of Authentication Algorithm
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: 04 July 2026 14:16 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: mostly · 4 mapping(s) from 3 framework(s): ATT&CK 2 (partial) · OWASP-Web 1 (mostly) · CAPEC 1 (partial)
OWASP Top 10 for Web (2025)
This weakness contributes to A07:2025 Authentication Failures.
NIST 800-53 r5 controls that address this weakness (0)AI
| Control | Title | Family | Why it addresses this CWE |
|---|---|---|---|
| No NIST controls proposed yet. | |||
MITRE ATT&CK techniques this weakness enables
Our own two-way CWE↔ATT&CK cross-walk — a direct mapping with no public source (the CWE→CAPEC→ATT&CK chain leaves most top weaknesses, incl. XSS and SQLi, mapped to nothing). Drafted by Grok and spot-checked by Claude Opus 4.8.
Direction: ← other covers this;
→ this covers other (F/M/P = full / mostly /
partial).
Top CVEs of this weakness type, ranked by Risk Priority
| CVE | Risk | CVSS | EPSS | Published |
|---|---|---|---|---|
CVE-2023-29357 KEV | 10.0 | 9.8 | 0.9965 | 2023-06-14 |
CVE-2024-7593 KEV UPD | 10.0 | 9.8 | 0.9999 | 2024-08-13 |
CVE-2020-8863 | 8.0 | 8.8 | 0.7673 | 2020-03-23 |
CVE-2018-4841 | 7.0 | 9.8 | 0.0493 | 2018-03-29 |
CVE-2022-20695 | 7.0 | 10.0 | 0.1986 | 2022-04-15 |
CVE-2022-39366 | 7.0 | 9.9 | 0.0085 | 2022-10-28 |
CVE-2023-25957 | 7.0 | 9.1 | 0.0058 | 2023-03-14 |
CVE-2023-29129 | 7.0 | 9.1 | 0.0089 | 2023-06-13 |
CVE-2023-3326 | 7.0 | 9.8 | 0.0110 | 2023-06-22 |
CVE-2024-4985 | 7.0 | 9.8 | 0.0257 | 2024-05-20 |
CVE-2023-4860 | 7.0 | 9.6 | 0.0037 | 2024-07-16 |
CVE-2024-10127 | 7.0 | 9.8 | 0.0060 | 2024-11-20 |
CVE-2025-21311 | 7.0 | 9.8 | 0.0235 | 2025-01-14 |
CVE-2025-63210 | 7.0 | 9.8 | 0.0050 | 2025-11-19 |
CVE-2025-12419 | 7.0 | 9.9 | 0.0031 | 2025-11-27 |
CVE-2025-12421 | 7.0 | 9.9 | 0.0031 | 2025-11-27 |
CVE-2025-13390 | 7.0 | 10.0 | 0.0472 | 2025-12-03 |
CVE-2025-66489 | 7.0 | 9.8 | 0.0080 | 2025-12-03 |
CVE-2026-28446 | 7.0 | 9.4 | 0.0065 | 2026-03-05 |
CVE-2026-29515 | 7.0 | 9.8 | 0.0048 | 2026-03-11 |
CVE-2026-33557 UPD | 7.0 | 9.1 | 0.0058 | 2026-04-20 |
CVE-2026-35579 UPD | 7.0 | 9.8 | 0.0051 | 2026-05-05 |
CVE-2026-41103 UPD | 7.0 | 9.1 | 0.0538 | 2026-05-12 |
CVE-2026-46595 UPD | 7.0 | 10.0 | 0.0044 | 2026-05-22 |
CVE-2026-46389 UPD | 7.0 | 10.0 | 0.0034 | 2026-06-05 |