High severity · published Sep 15, 2021
CVE-2021-26434
Visual Studio Elevation of Privilege Vulnerability
7.8
CVSS
0.9%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 59% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VS
Visual Studio 2017 · Microsoft
15.0 through 15.9 · source: NVD
VS
Visual Studio 2019 · Microsoft
16.0 through 16.11 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26434
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26434
msrc.microsoft.com
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26434
Patch
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26434
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1077/
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