CVE-2021-26434
Visual Studio Elevation of Privilege Vulnerability
HIGH
7.8
CVSS Score
Published: September 15, 2021 at 11:23 AM UTC
Updated: August 10, 2026 at 04:17 PM UTC
2 products affected across 1 vendorVisual Studio 2019Visual Studio 2017
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Severity
HIGH7.8
Exploit prediction
EPSS 0.9%
Description
Visual Studio Elevation of Privilege Vulnerability
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 15.9.39, so it looks safe — our inference, not a vendor statement
15.0.0 ≤ v < 16.9.1116.0 ≤ v ≤ 16.1116.0 ≤ v < 16.4.2616.0.0 ≤ v < 16.7.1916.11.0 ≤ v < 16.11.315.0.016.016.0.016.11.0
Affected range stops below 16.11.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.4.26, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.7.19, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.9.11, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
PatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26434Third Party AdvisoryVDB Entry
Source: [email protected]
https://www.zerodayinitiative.com/advisories/ZDI-21-1077/Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26434CVSS
7.8HIGHmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-732
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