CVE-2026-58616

{"id": "CVE-2026-58616", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-58616", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-28T20:15:16.258744Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 4.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 1.3}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 3.0, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 1.3}]}, "affected": [{"source": "secure@microsoft.com", "affectedData": [{"vendor": "Microsoft", "product": "Microsoft Edge (Chromium-based)", "versions": [{"status": "affected", "version": "-"}]}, {"vendor": "Microsoft", "product": "Microsoft Edge for Android", "versions": [{"status": "affected", "version": "1.0.0.0", "lessThan": "152.0.4191.52", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Edge for iOS", "versions": [{"status": "affected", "version": "1.0.0.0", "lessThan": "152.0.4191.52", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Edge for Linux", "versions": [{"status": "affected", "version": "1.0.0", "lessThan": "152.0.4191.52", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Edge for MAC", "versions": [{"status": "affected", "version": "1.0.0.0", "lessThan": "152.0.4191.52", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Edge for Windows", "versions": [{"status": "affected", "version": "1.0.0.0", "lessThan": "152.0.4191.52", "versionType": "custom"}]}]}], "published": "2026-08-28T20:18:44.927", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58616", "tags": ["Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-362"}]}], "descriptions": [{"lang": "en", "value": "Concurrent execution using shared resource with improper synchronization ('race condition') in Copilot Chat (Microsoft Edge) allows an authorized attacker to disclose information over a network."}], "lastModified": "2026-09-11T17:17:12.280", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "3F91281C-0214-4002-992E-2EEF8E72193E", "versionEndExcluding": "152.0.4191.53"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}