CVE-2025-49740
Windows SmartScreen Security Feature Bypass Vulnerability
Severity Score
8.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track*
*SSVC
Descriptions
Protection mechanism failure in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.
This vulnerability allows remote attackers to bypass the SmartScreen security feature on affected installations of Microsoft Windows. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the handling of executables in the user's Startup folder. When automatically launching executables from the Startup folder, Windows does not apply the SmartScreen security feature. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current user.
*Credits:
Simon Zuckerbraun - Trend Zero Day Initiative
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track*
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2025-06-09 CVE Reserved
- 2025-07-08 CVE Published
- 2025-07-18 CVE Updated
- 2025-07-18 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-693: Protection Mechanism Failure
CAPEC
References (1)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49740 | 2025-07-08 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Microsoft Search vendor "Microsoft" | Windows 10 Version 1809 Search vendor "Microsoft" for product "Windows 10 Version 1809" | >= 10.0.17763.0 < 10.0.17763.7558 Search vendor "Microsoft" for product "Windows 10 Version 1809" and version " >= 10.0.17763.0 < 10.0.17763.7558" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows Server 2019 Search vendor "Microsoft" for product "Windows Server 2019" | >= 10.0.17763.0 < 10.0.17763.7558 Search vendor "Microsoft" for product "Windows Server 2019" and version " >= 10.0.17763.0 < 10.0.17763.7558" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows Server 2019 (Server Core Installation) Search vendor "Microsoft" for product "Windows Server 2019 (Server Core Installation)" | >= 10.0.17763.0 < 10.0.17763.7558 Search vendor "Microsoft" for product "Windows Server 2019 (Server Core Installation)" and version " >= 10.0.17763.0 < 10.0.17763.7558" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows Server 2022 Search vendor "Microsoft" for product "Windows Server 2022" | >= 10.0.20348.0 < 10.0.20348.3932 Search vendor "Microsoft" for product "Windows Server 2022" and version " >= 10.0.20348.0 < 10.0.20348.3932" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows 10 Version 21H2 Search vendor "Microsoft" for product "Windows 10 Version 21H2" | >= 10.0.19044.0 < 10.0.19044.6093 Search vendor "Microsoft" for product "Windows 10 Version 21H2" and version " >= 10.0.19044.0 < 10.0.19044.6093" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows 11 Version 22H2 Search vendor "Microsoft" for product "Windows 11 Version 22H2" | >= 10.0.22621.0 < 10.0.22621.5624 Search vendor "Microsoft" for product "Windows 11 Version 22H2" and version " >= 10.0.22621.0 < 10.0.22621.5624" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows 10 Version 22H2 Search vendor "Microsoft" for product "Windows 10 Version 22H2" | >= 10.0.19045.0 < 10.0.19045.6093 Search vendor "Microsoft" for product "Windows 10 Version 22H2" and version " >= 10.0.19045.0 < 10.0.19045.6093" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows Server 2025 (Server Core Installation) Search vendor "Microsoft" for product "Windows Server 2025 (Server Core Installation)" | >= 10.0.26100.0 < 10.0.26100.4652 Search vendor "Microsoft" for product "Windows Server 2025 (Server Core Installation)" and version " >= 10.0.26100.0 < 10.0.26100.4652" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows 11 Version 22H3 Search vendor "Microsoft" for product "Windows 11 Version 22H3" | >= 10.0.22631.0 < 10.0.22631.5624 Search vendor "Microsoft" for product "Windows 11 Version 22H3" and version " >= 10.0.22631.0 < 10.0.22631.5624" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows 11 Version 23H2 Search vendor "Microsoft" for product "Windows 11 Version 23H2" | >= 10.0.22631.0 < 10.0.22631.5624 Search vendor "Microsoft" for product "Windows 11 Version 23H2" and version " >= 10.0.22631.0 < 10.0.22631.5624" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows Server 2022, 23H2 Edition (Server Core Installation) Search vendor "Microsoft" for product "Windows Server 2022, 23H2 Edition (Server Core Installation)" | >= 10.0.25398.0 < 10.0.25398.1732 Search vendor "Microsoft" for product "Windows Server 2022, 23H2 Edition (Server Core Installation)" and version " >= 10.0.25398.0 < 10.0.25398.1732" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows 11 Version 24H2 Search vendor "Microsoft" for product "Windows 11 Version 24H2" | >= 10.0.26100.0 < 10.0.26100.4652 Search vendor "Microsoft" for product "Windows 11 Version 24H2" and version " >= 10.0.26100.0 < 10.0.26100.4652" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows Server 2025 Search vendor "Microsoft" for product "Windows Server 2025" | >= 10.0.26100.0 < 10.0.26100.4652 Search vendor "Microsoft" for product "Windows Server 2025" and version " >= 10.0.26100.0 < 10.0.26100.4652" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows 10 Version 1507 Search vendor "Microsoft" for product "Windows 10 Version 1507" | >= 10.0.10240.0 < 10.0.10240.21073 Search vendor "Microsoft" for product "Windows 10 Version 1507" and version " >= 10.0.10240.0 < 10.0.10240.21073" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows 10 Version 1607 Search vendor "Microsoft" for product "Windows 10 Version 1607" | >= 10.0.14393.0 < 10.0.14393.8246 Search vendor "Microsoft" for product "Windows 10 Version 1607" and version " >= 10.0.14393.0 < 10.0.14393.8246" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows Server 2016 Search vendor "Microsoft" for product "Windows Server 2016" | >= 10.0.14393.0 < 10.0.14393.8246 Search vendor "Microsoft" for product "Windows Server 2016" and version " >= 10.0.14393.0 < 10.0.14393.8246" | en |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows Server 2016 (Server Core Installation) Search vendor "Microsoft" for product "Windows Server 2016 (Server Core Installation)" | >= 10.0.14393.0 < 10.0.14393.8246 Search vendor "Microsoft" for product "Windows Server 2016 (Server Core Installation)" and version " >= 10.0.14393.0 < 10.0.14393.8246" | en |
Affected
| ||||||