Internet Explorer
CVE-2020-1432 — Skype for Business via Internet Explorer Information Disclosure Vulnerability
Executive Summary
An information disclosure vulnerability exists when Skype for Business is accessed via Internet Explorer. An attacker who exploited the vulnerability could cause the user to place a call without additional consent, leading to information disclosure of the user profile. For the vulnerability to be exploited, a user must click a specially crafted URL that prompts the Skype app. In an email attack scenario, an attacker could exploit the vulnerability by sending an email message containing the specially crafted URL to the user and convincing the user to click the specially crafted URL. The security update addresses the vulnerability by correcting how Internet Explorer handles URLs that are designed to use the Skype for Business app by requesting user permission before launching the app.
Overview
4.3
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/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
Low
INTEGRITY
None
AVAILABILITY
None
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 3.9
EPSS Score
0.04452
probability of exploitation in the next 30 days
0.9018 percentile - updated 2026-06-21
View on FIRST.org
Affected Products
25 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Internet Explorer 11 on Windows 10 for 32-bit Systems | 4565513 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 for x64-based Systems | 4565513 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems | 4565511 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems | 4565511 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems | 4565508 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1709 for ARM64-based Systems | 4565508 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems | 4565508 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems | 4565489 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems | 4565489 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems | 4565489 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems | 4558998 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems | 4558998 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems | 4558998 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1903 for 32-bit Systems | 4565483 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1903 for ARM64-based Systems | 4565483 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1903 for x64-based Systems | 4565483 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1909 for 32-bit Systems | 4565483 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1909 for ARM64-based Systems | 4565483 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 1909 for x64-based Systems | 4565483 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 2004 for 32-bit Systems | 4565503 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 2004 for ARM64-based Systems | 4565503 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 10 Version 2004 for x64-based Systems | 4565503 (Security Update) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 4565524 (Monthly Rollup) 4565479 (IE Cumulative) Important Information Disclosure 4561643 4561603 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 4565524 Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 4565524 (Monthly Rollup) 4565479 (IE Cumulative) Important Information Disclosure 4561643 4561603 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 4565524 Internet Explorer 11 on Windows 8.1 for 32-bit systems 4565479 (IE Cumulative) 4565541 (Monthly Rollup) Important Information Disclosure 4561603 4561666 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 4565541 4565541 Internet Explorer 11 on Windows 8.1 for x64-based systems 4565479 (IE Cumulative) 4565541 (Monthly Rollup) Important Information Disclosure 4561603 4561666 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 4565541 4565541 Internet Explorer 11 on Windows RT 8.1 | 4565541 (Monthly Rollup) |
Important | Information Disclosure | Yes |
| Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4565524 (Monthly Rollup) 4565479 (IE Cumulative) Low Information Disclosure 4561643 4561603 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 4565524 Internet Explorer 11 on Windows Server 2012 4565479 (IE Cumulative) 4565537 (Monthly Rollup) Low Information Disclosure 4561603 4561612 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 4565537 Internet Explorer 11 on Windows Server 2012 R2 4565479 (IE Cumulative) 4565541 (Monthly Rollup) Low Information Disclosure 4561603 4561666 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 4565541 4565541 Internet Explorer 11 on Windows Server 2016 | 4565511 (Security Update) |
Low | Information Disclosure | Yes |
| Internet Explorer 11 on Windows Server 2019 | 4558998 (Security Update) |
Low | Information Disclosure | Yes |
Patches
8 patches
| Article | Type | Restart |
|---|---|---|
4565513 |
Security Update | Yes |
4565511 |
Security Update | Yes |
4565508 |
Security Update | Yes |
4565489 |
Security Update | Yes |
4558998 |
Security Update | Yes |
4565483 |
Security Update | Yes |
4565503 |
Security Update | Yes |
4565541 |
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
Firas Salem (Cybersecurity Researcher) with Metasudo
References
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