PatchaPalooza

CVE-2021-36952: Visual Studio Remote Code Execution Vulnerability

CVE-2021-36952 is a remote code execution vulnerability in Visual Studio, rated Important by Microsoft, with a CVSS 3.1 base score of 7.8 (High). An attacker can exploit it by an attacker with local access, without any privileges and only if a user takes an action. Microsoft has not reported exploitation in the wild and rates exploitation as less likely. The EPSS model estimates a 51.46% probability of exploitation activity in the next 30 days, higher than 99% of all scored vulnerabilities. Microsoft released the fix on 14 September 2021 in the September 2021 Patch Tuesday. It affects 3 products in 1 product family (Developer Tools).

Key facts

CVE ID
CVE-2021-36952
Severity
High CVSS 7.8
Microsoft severity
Important
Impact
Remote Code Execution
Exploited in the wild
No
Publicly disclosed
No
Exploitation likelihood
Less Likely
Weakness
CWE-787
EPSS
51.46% (percentile 99%)
CISA KEV
Not listed
Released
Last updated
Patch Tuesday
September 2021 Patch Tuesday
Product families
Developer Tools

CVSS score and vector

Microsoft scores CVE-2021-36952 at 7.8 (temporal 6.8) using CVSS 3.1. Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

MetricValue
Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit code maturityUnproven
Remediation levelOfficial fix
Report confidenceConfirmed

Affected products (3)

Developer Tools

ProductSecurity updateTypeFixed buildRestart
Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)Release NotesSecurity Update15.9.39Maybe
Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)Release NotesSecurity Update16.4.26Maybe
Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)Release NotesSecurity Update16.7.19Maybe

NIST NVD data

NVD status
Modified
NVD CVSS
7.8 (HIGH)
NVD weakness
CWE-787
Published to NVD
NVD last modified

Affected configurations (CPE)

ProductVulnerable versions
visual studio 2017from 15.0, up to and including 15.9
visual studio 2019from 16.0, up to and including 16.7

References

Acknowledgments

Revision history

VersionDateDescription
1.0Information published.

Sources