CVE-2026-21256

{"id": "CVE-2026-21256", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "published": "2026-02-10T18:16:27.330", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21256", "tags": ["Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-77"}, {"lang": "en", "value": "CWE-94"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-77"}]}], "descriptions": [{"lang": "en", "value": "Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio allows an unauthorized attacker to execute code over a network."}, {"lang": "es", "value": "Neutralizaci\u00f3n incorrecta de elementos especiales utilizados en un comando ('inyecci\u00f3n de comandos') en GitHub Copilot y Visual Studio permite a un atacante no autorizado ejecutar c\u00f3digo a trav\u00e9s de una red."}], "lastModified": "2026-02-11T21:37:01.630", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:-:*:*", "vulnerable": true, "matchCriteriaId": "D5D30CC7-E672-4D7F-B1BA-2D56DC36109C", "versionEndExcluding": "17.14.26", "versionStartIncluding": "17.14.0"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}