CWE-523Unprotected Transport of Credentials

Abstraction: Base · CVEs in our corpus: 25

Login pages do not use adequate measures to protect the user name and password while they are in transit from the client to the server.

Last updated: 20 August 2026 13:14 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 · 3 mapping(s) from 2 framework(s): STIG rhel 8 2 (mostly) · CAPEC 1 (partial)

See the full cumulative-coverage rollup →

OWASP Top 10 for Web (2025)

This weakness contributes to A04:2025 Cryptographic Failures.

Control responseHuman-reviewed

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

Prevent

Stop it (NIST 800-53 / CSF Protect)

SC-37 Out-of-band Channels
SC-8 Transmission Confidentiality and Integrity
SC-9 Transmission Confidentiality
PR.DS-02

Detect

Catch it (CSF Detect / Respond)

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Harden

Shrink the surface (DISA STIG)

5 hardening rules · 3 OS baselines

Validate

Prove the fix (OWASP ASVS)

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NIST 800-53 r5 controls that address this weakness (3)AI-assisted

Control	Title	Family	Why it addresses this CWE
`SC-37`	Out-of-band Channels	SC	Using a distinct channel for credential transmission prevents unprotected transport over the application's normal communication path.
`SC-8`	Transmission Confidentiality and Integrity	SC	Requiring protected transport for credentials directly mitigates unprotected credential transmission over networks.
`SC-9`	Transmission Confidentiality	SC	Prevents unprotected transport of credentials by mandating confidentiality mechanisms such as TLS for all sensitive data flows.

Top CVEs of this weakness type, ranked by Risk Priority

CVE	Risk	CVSS	EPSS	Published
`CVE-2020-25175`	7.5	9.8	0.0114	2020-12-14
`CVE-2024-1509`	6.8	9.1	0.0036	2025-02-28
`CVE-2017-16731`	6.7	8.8	0.0072	2017-12-20
`CVE-2025-57800`	6.6	8.8	0.0046	2025-08-22
`CVE-2021-38460`	6.2	7.5	0.0181	2021-10-12
`CVE-2022-31805`	6.0	7.5	0.0099	2022-06-24
`CVE-2021-32003`	5.9	8.0	0.0023	2021-08-05
`CVE-2023-31277`	5.9	7.5	0.0057	2023-07-06
`CVE-2025-61121`	5.7	7.5	0.0028	2025-10-30
`CVE-2025-61916`	5.5	7.9	0.0016	2026-01-05
`CVE-2026-54784`	5.5	7.4	0.0018	2026-07-08
`CVE-2025-41705`	5.3	6.8	0.0043	2025-10-14
`CVE-2025-64309`	5.3	7.4	0.0021	2025-11-15
`CVE-2025-66029`	5.3	7.6	0.0020	2025-12-17
`CVE-2024-1102`	5.2	6.5	0.0079	2024-04-25
`CVE-2026-23635`	5.0	6.5	0.0032	2026-03-25
`CVE-2025-64308`	4.9	6.5	0.0021	2025-11-15
`CVE-2024-20395`	4.8	6.4	0.0022	2024-07-17
`CVE-2023-22862`	4.7	5.9	0.0054	2023-06-05
`CVE-2026-8673`	4.4	5.9	0.0019	2026-05-22
`CVE-2026-36610`	4.4	5.9	0.0015	2026-06-03
`CVE-2023-28708`	4.1	4.3	0.0183	2023-03-22
`CVE-2026-56587`	3.1	3.7	0.0015	2026-07-21