CVE-2025-49740
published 2025-07-08CVE-2025-49740: Protection mechanism failure in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.
PriorityP351high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.75%
50.7th percentile
Protection mechanism failure in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.
Affected
39 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1507 | < 10.0.10240.21073 | 10.0.10240.21073 |
| microsoft | windows_10_1607 | < 10.0.14393.8246 | 10.0.14393.8246 |
| microsoft | windows_10_1809 | < 10.0.17763.7558 | 10.0.17763.7558 |
| microsoft | windows_10_21h2 | < 10.0.19044.6093 | 10.0.19044.6093 |
| microsoft | windows_10_22h2 | < 10.0.19045.6093 | 10.0.19045.6093 |
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.21073 | 10.0.10240.21073 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.8246 | 10.0.14393.8246 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.7558 | 10.0.17763.7558 |
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.6093 | 10.0.19044.6093 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.6093 | 10.0.19045.6093 |
| microsoft | windows_11_22h2 | < 10.0.22621.5624 | 10.0.22621.5624 |
| microsoft | windows_11_23h2 | < 10.0.22631.5624 | 10.0.22631.5624 |
| microsoft | windows_11_24h2 | < 10.0.26100.4652 | 10.0.26100.4652 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.5624 | 10.0.22621.5624 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.5624 | 10.0.22631.5624 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.5624 | 10.0.22631.5624 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.4652 | 10.0.26100.4652 |
| microsoft | windows_server_2016 | < 10.0.14393.8246 | 10.0.14393.8246 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.8246 | 10.0.14393.8246 |
| microsoft | windows_server_2019 | < 10.0.17763.7558 | 10.0.17763.7558 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.7558 | 10.0.17763.7558 |
| microsoft | windows_server_2022 | < 10.0.20348.3932 | 10.0.20348.3932 |
| microsoft | windows_server_2022 | >= 10.0.20348.0 < 10.0.20348.3932 | 10.0.20348.3932 |
| microsoft | windows_server_2022_23h2 | < 10.0.25398.1732 | 10.0.25398.1732 |
| microsoft | windows_server_2025 | < 10.0.26100.4652 | 10.0.26100.4652 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vendor_msrc8.8HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Microsoft
Windows SmartScreen Security Feature Bypass Vulnerability
vendor_msrc·2025-07-08·CVSS 8.8
CVE-2025-49740 [HIGH] CWE-693 Windows SmartScreen Security Feature Bypass Vulnerability
Windows SmartScreen Security Feature Bypass Vulnerability
Description: Protection mechanism failure in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.
FAQ: What kind of security feature could be bypassed by successfully exploiting this vulnerability?
An attacker who successfully exploited the vulnerability could evade Mark of the Web (MOTW) defenses.
FAQ: How could an attacker exploit this vulnerability?
To exploit this security feature bypass vulnerability, an attacker would need to convince a user to launch malicious files using a launcher application that requests that no UI be shown.
FAQ: According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
A user needs to be tricked into runn
GHSA
GHSA-qj68-5fvr-c98f: Protection mechanism failure in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network
ghsa_unreviewed·2025-07-08
CVE-2025-49740 [HIGH] CWE-693 GHSA-qj68-5fvr-c98f: Protection mechanism failure in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network
Protection mechanism failure in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.
No detection rules found.
No public exploits indexed.
Krebs
Microsoft Patch Tuesday, July 2025 Edition
blogs_krebs·2025-07-09·CVSS 9.8
CVE-2025-49719 [CRITICAL] Microsoft Patch Tuesday, July 2025 Edition
Microsoft today released updates to fix at least 137 security vulnerabilities in its Windows operating systems and supported software. None of the weaknesses addressed this month are known to be actively exploited, but 14 of the flaws earned Microsoft’s most-dire “critical” rating, meaning they could be exploited to seize control over vulnerable Windows PCs with little or no help from users.
While not listed as critical, CVE-2025-49719 is a publicly disclosed information disclosure vulnerability, with all versions as far back as SQL Server 2016 receiving patches. Microsoft rates CVE-2025-49719 as less likely to be exploited, but the availability of proof-of-concept code for this flaw means its patch should probably be a priority for affected enterprises.
Mike Walters , co-founder of Acti
Krebs
Microsoft Patch Tuesday, July 2025 Edition
blogs_krebs·2025-07-08·CVSS 9.8
CVE-2025-49719 [CRITICAL] Microsoft Patch Tuesday, July 2025 Edition
Microsoft today released updates to fix at least 137 security vulnerabilities in its Windows operating systems and supported software. None of the weaknesses addressed this month are known to be actively exploited, but 14 of the flaws earned Microsoft’s most-dire “critical” rating, meaning they could be exploited to seize control over vulnerable Windows PCs with little or no help from users.
While not listed as critical, CVE-2025-49719 is a publicly disclosed information disclosure vulnerability, with all versions as far back as SQL Server 2016 receiving patches. Microsoft rates CVE-2025-49719 as less likely to be exploited, but the availability of proof-of-concept code for this flaw means its patch should probably be a priority for affected enterprises.
Mike Walters, co-founder of Actio
2025-07-08
Published