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CVE-2020-0789

18
FAUCET Score

CVE-2020-0789 is a denial of service vulnerability affecting Microsoft Visual Studio 2019, stemming from the Extension Installer Service improperly handling hard links. It carries a CVSS score of 7.1 (HIGH), indicating a local attack vector with low complexity, requiring low privileges, and potentially leading to high impact on integrity and availability. While no active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB) has been identified, it has received limited community discussion and media coverage, primarily noted in a BleepingComputer article regarding Microsoft's March 2020 Patch Tuesday.

Impacted Technologies

VendorProductVersion(s)CPE
>= 16.0, <= 16.4CPE matchmatch criteria
cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.86%
Probability of exploitation in next 30 days
EPSS Percentile
54.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0086 is in the 90th percentile among its peer group of 17,070 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft Visual Studio 2019 version 16.0
View patch
microsoftpatch availablevia msrc
Product: Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)
View patch

Vendor Advisories (1)

microsoft2020-Mar/CVE-2020-0789Important

Visual Studio Extension Installer Service Denial of Service Vulnerability

Mar 10, 2020

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2020-0789
PatchVendor Advisory