Microsoft Browsers
CVE-2019-0762 — Microsoft Browsers Security Feature Bypass Vulnerability
Executive Summary
A security feature bypass vulnerability exists when Microsoft browsers improperly handle requests of different origins. The vulnerability allows Microsoft browsers to bypass Same-Site cookie restrictions, and to allow requests that should otherwise be ignored. An attacker who successfully exploited the vulnerability could force the browser to send data that would otherwise be restricted. In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft browsers and then convince a user to view the website. The attacker could also take advantage of compromised websites, and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability. The security update addresses the vulnerability by modifying how affected Microsoft browsers handle cross-domain requests.
Overview
4.3
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
None
INTEGRITY
Low
AVAILABILITY
None
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 3.9
EPSS Score
0.04499
probability of exploitation in the next 30 days
0.90501 percentile - updated 2026-07-25
View on FIRST.org
Affected Products
21 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems | 4489886 (Security Update) |
Important | Security Feature Bypass | Yes |
| Internet Explorer 11 on Windows 10 Version 1709 for ARM64-based Systems | 4489886 (Security Update) |
Important | Security Feature Bypass | Yes |
| Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems | 4489886 (Security Update) |
Important | Security Feature Bypass | Yes |
| Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems | 4489868 (Security Update) |
Important | Security Feature Bypass | Yes |
| Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems | 4489868 (Security Update) |
Important | Security Feature Bypass | Yes |
| Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems | 4489868 (Security Update) |
Important | Security Feature Bypass | Yes |
| Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems | 4489899 (Security Update) |
Important | Security Feature Bypass | Yes |
| Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems | 4489899 (Security Update) |
Important | Security Feature Bypass | Yes |
| Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems | 4489899 (Security Update) |
Important | Security Feature Bypass | Yes |
| Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 4489878 (Monthly Rollup) 4489873 (IE Cumulative) Important Security Feature Bypass 4486563 4486474 Base: 4.3 Temporal: 3.9 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 4489878 (Monthly Rollup) 4489873 (IE Cumulative) Important Security Feature Bypass 4486563 4486474 Base: 4.3 Temporal: 3.9 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows 8.1 for 32-bit systems 4489873 (IE Cumulative) 4489881 (Monthly Rollup) Important Security Feature Bypass 4486474 4487000 Base: 4.3 Temporal: 3.9 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows 8.1 for x64-based systems 4489873 (IE Cumulative) 4489881 (Monthly Rollup) Important Security Feature Bypass 4486474 4487000 Base: 4.3 Temporal: 3.9 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows RT 8.1 | 4489881 (Monthly Rollup) |
Important | Security Feature Bypass | Yes |
| Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4489878 (Monthly Rollup) 4489873 (IE Cumulative) Low Security Feature Bypass 4486563 4486474 Base: 2.4 Temporal: 2.2 Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows Server 2012 R2 4489873 (IE Cumulative) 4489881 (Monthly Rollup) Low Security Feature Bypass 4486474 4487000 Base: 2.4 Temporal: 2.2 Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows Server 2019 | 4489899 (Security Update) |
Low | Security Feature Bypass | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems | 4489886 (Security Update) |
Important | Security Feature Bypass | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for ARM64-based Systems | 4489886 (Security Update) |
Important | Security Feature Bypass | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems | 4489886 (Security Update) |
Important | Security Feature Bypass | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems | 4489868 (Security Update) |
Important | Security Feature Bypass | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems | 4489868 (Security Update) |
Important | Security Feature Bypass | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems | 4489868 (Security Update) |
Important | Security Feature Bypass | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems | 4489899 (Security Update) |
Important | Security Feature Bypass | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems | 4489899 (Security Update) |
Important | Security Feature Bypass | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems | 4489899 (Security Update) |
Important | Security Feature Bypass | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows Server 2019 | 4489899 (Security Update) |
Low | Security Feature Bypass | Yes |
Patches
4 patches
| Article | Type | Restart |
|---|---|---|
4489886 |
Security Update | Yes |
4489868 |
Security Update | Yes |
4489899 |
Security Update | Yes |
4489881 |
Monthly Rollup | Yes |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
References
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