VDB-172849 · CVE-2021-27064 · GCVE-0-2021-27064

Microsoft Visual Studio up to 2017 Version 15.9/2019 Version 16.9 Installer Local Privilege Escalation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.0	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Microsoft Visual Studio up to 2017 Version 15.9/2019 Version 16.9. It has been classified as critical. The affected element is an unknown function of the component Installer. This manipulation causes an unknown weakness. The identification of this vulnerability is CVE-2021-27064. The attack can only be executed locally. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability has been found in Microsoft Visual Studio up to 2017 Version 15.9/2019 Version 16.9 (Programming Tool Software) and classified as critical. Affected by this vulnerability is an unknown code block of the component Installer. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was shared 04/13/2021 as confirmed security guidance (Website). The advisory is shared at portal.msrc.microsoft.com. This vulnerability is known as CVE-2021-27064. Neither technical details nor an exploit are publicly available.

It is declared as proof-of-concept.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Programming Tool Software

Vendor

Microsoft

Name

Visual Studio

Version

License

commercial

Website

Vendor: https://www.microsoft.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.8
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 7.8
Vendor Vector (Microsoft): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Local Privilege Escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

02/10/2021 🔍
04/13/2021 +62 days 🔍
04/13/2021 +0 days 🔍
04/13/2021 +0 days 🔍
04/16/2021 +3 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Status: Confirmed

CVE: CVE-2021-27064 (🔍)
GCVE (CVE): GCVE-0-2021-27064
GCVE (VulDB): GCVE-100-172849

Entryinfo

Created: 04/13/2021 21:41
Updated: 04/16/2021 15:38
Changes: 04/13/2021 21:41 (34), 04/13/2021 21:45 (20), 04/16/2021 15:38 (2)
Complete: 🔍
Cache ID: 216::103