CVE-2026-21523

{"id": "CVE-2026-21523", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.0, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.1}]}, "published": "2026-02-10T18:16:34.743", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21523", "tags": ["Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-367"}]}], "descriptions": [{"lang": "en", "value": "Time-of-check time-of-use (toctou) race condition in GitHub Copilot and Visual Studio allows an authorized attacker to execute code over a network."}, {"lang": "es", "value": "Una condici\u00f3n de carrera de tipo time-of-check time-of-use (toctou) en GitHub Copilot y Visual Studio permite a un atacante autorizado ejecutar c\u00f3digo a trav\u00e9s de una red."}], "lastModified": "2026-02-11T21:41:36.627", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:visual_studio_code:*:*:*:*:*:-:*:*", "vulnerable": true, "matchCriteriaId": "F9D09E0D-DA79-4992-848B-EFF81DBD4099", "versionEndExcluding": "1.109.2"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}