Microsoft Browsers
CVE-2019-0654 — Microsoft Browser Spoofing Vulnerability
Executive Summary
A spoofing vulnerability exists when Microsoft browsers improperly handles specific redirects. An attacker who successfully exploited this vulnerability could trick a user into believing that the user was on a legitimate website. The specially crafted website could either spoof content or serve as a pivot to chain an attack with other vulnerabilities in web services. To exploit the vulnerability, the user must either browse to a malicious website or be redirected to it. In an email attack scenario, an attacker could send an email message in an attempt to convince the user to click a link to a malicious site. In a web-based attack scenario, an attacker could host a specially crafted website designed to appear as a legitimate website to the user. However, the attacker would have no way to force the user to visit the specially crafted website. The attacker would have to convince the user to visit the specially crafted website, typically by way of enticement in an email or instant message. The security update addresses the vulnerability by correcting how browsers handles specific redirects.
Overview
4.3
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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
0.02786
probability of exploitation in the next 30 days
0.84907 percentile - updated 2026-07-25
View on FIRST.org
Affected Products
35 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Internet Explorer 10 on Windows Server 2012 4487025 (Monthly Rollup) 4486474 (IE Cumulative) Low Spoofing 4480965 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 10 for 32-bit Systems | 4487018 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 10 for x64-based Systems | 4487018 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems | 4487026 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems | 4487026 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems | 4487020 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems | 4487020 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems | 4486996 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 10 Version 1709 for ARM64-based Systems | 4486996 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems | 4486996 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems | 4487017 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems | 4487017 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems | 4487017 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems | 4487044 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems | 4487044 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems | 4487044 (Security Update) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 4486563 (Monthly Rollup) 4486474 (IE Cumulative) Important Spoofing 4480970 4480965 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 4486563 (Monthly Rollup) 4486474 (IE Cumulative) Important Spoofing 4480970 4480965 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 4487000 (Monthly Rollup) 4486474 (IE Cumulative) Important Spoofing 4480963 4480965 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 4487000 (Monthly Rollup) 4486474 (IE Cumulative) Important Spoofing 4480963 4480965 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 | 4487000 (Monthly Rollup) |
Important | Spoofing | Yes |
| Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4486563 (Monthly Rollup) 4486474 (IE Cumulative) Low Spoofing 4480970 4480965 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 4487000 (Monthly Rollup) 4486474 (IE Cumulative) Low Spoofing 4480963 4480965 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 2016 | 4487026 (Security Update) |
Low | Spoofing | Yes |
| Internet Explorer 11 on Windows Server 2019 | 4487044 (Security Update) |
Low | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems | 4487018 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems | 4487018 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems | 4487026 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems | 4487026 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems | 4487020 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems | 4487020 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems | 4486996 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for ARM64-based Systems | 4486996 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems | 4486996 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems | 4487017 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems | 4487017 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems | 4487017 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems | 4487044 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems | 4487044 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems | 4487044 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows Server 2016 | 4487026 (Security Update) |
Important | Spoofing | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows Server 2019 | 4487044 (Security Update) |
Important | Spoofing | Yes |
Patches
7 patches
| Article | Type | Restart |
|---|---|---|
4487018 |
Security Update | Yes |
4487026 |
Security Update | Yes |
4487020 |
Security Update | Yes |
4486996 |
Security Update | Yes |
4487017 |
Security Update | Yes |
4487044 |
Security Update | Yes |
4487000 |
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
Jonathan Birch of Microsoft Corporation
References
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