CVE-2026-45595: CWE-693: Protection Mechanism Failure in Microsoft Windows 10 Version 1607
Protection mechanism failure in Windows Mark of the Web (MOTW) allows an unauthorized attacker to bypass a security feature over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-45595) affects Windows 10 Version 1607 (build 10.0.14393.0) and involves a failure in the Mark of the Web (MOTW) protection mechanism. MOTW is designed to help enforce security boundaries for files originating from untrusted sources. The failure allows an attacker to bypass this security feature remotely, potentially leading to limited integrity and availability impacts. The CVSS 3.1 base score is 5.4 (medium), reflecting network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, no confidentiality impact, low integrity impact, and low availability impact. Microsoft has released an official fix for this vulnerability.
Potential Impact
An attacker can bypass the MOTW security feature remotely without privileges but requires user interaction. The impact is limited to integrity and availability, with no confidentiality loss. This could allow limited unauthorized actions or disruption on affected systems running Windows 10 Version 1607.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45595 to remediate this vulnerability.
CVE-2026-45595: CWE-693: Protection Mechanism Failure in Microsoft Windows 10 Version 1607
Description
Protection mechanism failure in Windows Mark of the Web (MOTW) allows an unauthorized attacker to bypass a security feature over a network.
CVSS v3.1
Score 5.4medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-45595) affects Windows 10 Version 1607 (build 10.0.14393.0) and involves a failure in the Mark of the Web (MOTW) protection mechanism. MOTW is designed to help enforce security boundaries for files originating from untrusted sources. The failure allows an attacker to bypass this security feature remotely, potentially leading to limited integrity and availability impacts. The CVSS 3.1 base score is 5.4 (medium), reflecting network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, no confidentiality impact, low integrity impact, and low availability impact. Microsoft has released an official fix for this vulnerability.
Potential Impact
An attacker can bypass the MOTW security feature remotely without privileges but requires user interaction. The impact is limited to integrity and availability, with no confidentiality loss. This could allow limited unauthorized actions or disruption on affected systems running Windows 10 Version 1607.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45595 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-12T19:55:45.730Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45595","vendor":"Microsoft"}]
Threat ID: 6a284ce18dd33fbd85664e06
Added to database: 06/09/2026, 17:26:57 UTC
Last enriched: 07/29/2026, 21:59:15 UTC
Last updated: 07/31/2026, 19:30:14 UTC
Views: 63
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.