CVE-2026-21257HIGH 8.0EPSS p53.2%

CVE-2026-21257CVE-2026-21257

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.

Scoring

CVSS 3.18.0 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS0.84% probability of exploitation · percentile 53.2% · 2026-06-18T12:00:27Z
Published2026-02-10
Last modified2026-02-11

Underlying weaknesses· 1

CWE-77

References

  1. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21257

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements used in a Command ('Command Injection')cwe-770%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.