Visual Studio
CVE-2020-0884 — Microsoft Visual Studio Spoofing Vulnerability
Executive Summary
A spoofing vulnerability exists in Microsoft Visual Studio as it includes a reply URL that is not secured by SSL. An attacker who successfully exploited this vulnerability could compromise the access tokens, exposing security and privacy risks. To exploit this vulnerability, an attacker would need to monitor the network traffic between a client machine and server while the end user is developing an Outlook Web Add-in, and the client also has two-factor authentication enabled in Outlook. The update addresses the vulnerability by securing the reply URL with HTTPS.
Overview
3.7
CVSS LOW
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
ATTACK VECTOR
Network
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
EPSS Score
0.01629
probability of exploitation in the next 30 days
0.73097 percentile - updated 2026-06-21
View on FIRST.org
Affected Products
3 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) | Release Notes (Security Update) |
Important | Spoofing | Maybe |
| Microsoft Visual Studio 2019 version 16.0 | Release Notes (Security Update) |
Important | Spoofing | Maybe |
| Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) | Release Notes (Security Update) |
Important | Spoofing | Maybe |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
Release Notes |
Security Update | Maybe |
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
Microsoft Corporation
References
On This Page