PT-2026-7358 · Microsoft+1 · Visual Studio+1

Nakkouch Tarek · Published 2026-02-10 · Updated 2026-03-13 · CVE-2026-21256

Positive Technologies (AI Summary)

CVSS v2.0

10

High

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions GitHub Copilot and Visual Studio (affected versions not specified)

Description A flaw exists in the code generation management of the software development tool. Successful exploitation could allow a remote attacker to execute arbitrary code. This issue involves improper neutralization of special elements used in a command, leading to a command injection.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Command Injection

Code Injection

Weakness Enumeration

CWE-77

CWE-94

Related Identifiers

BDU:2026-01787

CVE-2026-21256

Affected Products

Github Copilot

Visual Studio

References · 6

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21256 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21256 · Security Note
• https://bdu.fstec.ru/vul/2026-01787 · Security Note
• https://osv.dev/vulnerability/CVE-2026-21256 · Vendor Advisory
• https://t.me/msrcreports/3379 · Telegram Post
• https://twitter.com/CisoRaging77913/status/2026920820992303244 · Twitter Post