Weakness · High
CWE-693: Protection Mechanism Failure
What it is
The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
- Severity (our rating)
- High
- Likelihood of exploit
- Not rated by MITRE
- Introduced during
- Architecture and Design, Implementation, Operation
- Exploited in the wild
- 11 known exploited CVEs
In more detail
This weakness covers three distinct situations. A "missing" protection mechanism occurs when the application does not define any mechanism against a certain class of attack. An "insufficient" protection mechanism might provide some defenses - for example, against the most common attacks - but it does not protect against everything that is intended. Finally, an "ignored" mechanism occurs when a mechanism is available and in active use within the product, but the developer has not applied it in some code path.
What an attacker can do
- Bypass Protection Mechanism (Access Control)
How to prevent it
MITRE lists no specific mitigation for this weakness. Treat it like its parent weaknesses below: validate input, keep the design simple and review the code where it could appear.
Exploited in the wild: 11 CVEs
Vulnerabilities caused by CWE-693 that attackers have used, from CISA's Known Exploited Vulnerabilities catalog, newest first.
- CVE-2026-58704Google Pixel Improper Authorization Vulnerability · added September 16, 2026
- CVE-2026-32202Microsoft Windows Protection Mechanism Failure Vulnerability · added April 28, 2026
- CVE-2025-40536SolarWinds Web Help Desk Security Control Bypass Vulnerability · added February 12, 2026
- CVE-2026-21513Microsoft MSHTML Framework Protection Mechanism Failure Vulnerability · added February 10, 2026
- CVE-2026-21510Microsoft Windows Shell Protection Mechanism Failure Vulnerability · added February 10, 2026
- CVE-2025-04117-Zip Mark of the Web Bypass Vulnerability · added February 6, 2025
- CVE-2024-38226Microsoft Publisher Protection Mechanism Failure Vulnerability · added September 10, 2024
- CVE-2024-38217Microsoft Windows Mark of the Web (MOTW) Protection Mechanism Failure Vulnerability · added September 10, 2024
- CVE-2024-38213Microsoft Windows SmartScreen Security Feature Bypass Vulnerability · added August 13, 2024
- CVE-2024-29988Microsoft SmartScreen Prompt Security Feature Bypass Vulnerability · added April 30, 2024
- CVE-2024-21412 ransomwareMicrosoft Windows Internet Shortcut Files Security Feature Bypass Vulnerability · added February 13, 2024
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Start freeSource: MITRE Common Weakness Enumeration, CWE version 4.19.1. CWE is a trademark of The MITRE Corporation.