What CVEs are caused by CWE-305?

135 recorded CVEs are attributed to CWE-305, including CVE-2024-37085, CVE-2025-31161, CVE-2025-4320. 2 are listed in CISA's Known Exploited Vulnerabilities (KEV) catalog.

What are the consequences of CWE-305?

Exploiting CWE-305 can lead to: Bypass Protection Mechanism.

Is CWE-305 actively exploited?

Yes. 2 CWE-305 vulnerabilities are in CISA's KEV catalog of actively exploited flaws, out of 135 recorded CVEs.

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Base weakness

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CWE-305: Authentication Bypass by Primary Weakness

The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.

Last updated May 1, 2026

135

Recorded CVEs

With this primary weakness

2

KEVs

In the CISA KEV catalog

Not rated

Likelihood of exploit

Per MITRE

Base

Abstraction

MITRE classification

Overview

CWE-305 (Authentication Bypass by Primary Weakness) is a base-level software weakness catalogued by MITRE in the Common Weakness Enumeration (CWE). It describes a recurring type of mistake that can lead to exploitable security vulnerabilities.

Real-world CVEs

135 recorded CVEs are caused by CWE-305 (Authentication Bypass by Primary Weakness), including 2 in CISA's KEV (Known Exploited Vulnerabilities) catalog. KEVs are shown first. 32 new CWE-305 CVEs have been recorded so far in 2026 (36 in 2025).

CVE-2025-4320

Information Disclosure in Birebirsoft's Sufirmam

Critical · CVSS 10.0 · EPSS 37th

2026-01-23

CVE-2024-36388

Critical · CVSS 10.0 · EPSS 38th

2024-06-02

CVE-2024-1403

Critical · CVSS 10.0 · EPSS 87th

2024-02-27

CVE-2026-4670

Improper Authentication vulnerability in Progress MOVEit Automation

Critical · CVSS 9.8 · EPSS 92th

2026-04-30

CVE-2025-13915

Authentication bypass in IBM API Connect

Critical · CVSS 9.8 · EPSS 95th

2025-12-26

CVE-2025-41733

Possible malfunction credential injection

Critical · CVSS 9.8 · EPSS 45th

2025-11-18

CVE-2025-36386

There is a vulnerability in the IBM Maximo Manage application in IBM Maximo Application Suite for Cognos Analytics

Critical · CVSS 9.8 · EPSS 41th

2025-10-28

CVE-2021-26102

Critical · CVSS 9.8 · EPSS 97th

2024-12-19

CVE-2024-50478

WordPress 1-Click Login: Passwordless Authentication plugin 1.4.5 - Broken Authentication vulnerability

Critical · CVSS 9.8 · EPSS 62th

2024-10-28

CVE-2023-41920

Critical · CVSS 9.8 · EPSS 34th

2024-07-02

Showing 12 of 135 recorded CWE-305 CVEs. Track new ones as they are published and get AI-written analysis and fixes.

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Common consequences

What can happen when CWE-305 is exploited.

Bypass Protection Mechanism

Affects: Access Control

How it happens

When it is introduced

Typically introduced during these phases of the software lifecycle.

Implementation

Illustrative examples

Real CVEs that MITRE cites as examples of this weakness.

CVE-2002-1374 — The provided password is only compared against the first character of the real password.
CVE-2000-0979 — The password is not properly checked, which allows remote attackers to bypass access controls by sending a 1-byte password that matches the first character of the real password.
CVE-2001-0088 — Chain: Forum software does not properly initialize an array, which inadvertently sets the password to a single character, allowing remote attackers to easily guess the password and gain administrative privileges.

Terminology & mappings

Mapped taxonomies

PLOVER: Authentication Bypass by Primary Weakness

Frequently asked questions

Common questions about CWE-305.

What is CWE-305?: The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.
What CVEs are caused by CWE-305?: 135 recorded CVEs are attributed to CWE-305, including CVE-2024-37085, CVE-2025-31161, CVE-2025-4320. 2 are listed in CISA's Known Exploited Vulnerabilities (KEV) catalog.
What are the consequences of CWE-305?: Exploiting CWE-305 can lead to: Bypass Protection Mechanism.
Is CWE-305 actively exploited?: Yes. 2 CWE-305 vulnerabilities are in CISA's KEV catalog of actively exploited flaws, out of 135 recorded CVEs.

References

Weakness data is sourced from the MITRE CWE catalog (v4.20). CVE associations are aggregated and kept current by RadicalNotion.AI.

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