Description
Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio allows an authorized attacker to elevate privileges over a network.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
patch
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21257
Scores
CVSS v3
8.0
EPSS
0.0005
EPSS Percentile
14.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-77
Status
published
Products (3)
Microsoft/Microsoft Visual Studio 2022 version 17.14
17.14.0 - 17.14.26
Microsoft/Microsoft Visual Studio 2026 version 18.3
18.3.0
microsoft/visual_studio_2022
17.14.0 - 17.14.26
Published
Feb 10, 2026
Tracked Since
Feb 18, 2026