CVE-2026-21527

{"id": "CVE-2026-21527", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 3.9}]}, "published": "2026-02-10T18:16:35.093", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21527", "tags": ["Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-345"}, {"lang": "en", "value": "CWE-451"}, {"lang": "en", "value": "CWE-1286"}]}], "descriptions": [{"lang": "en", "value": "User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network."}, {"lang": "es", "value": "La tergiversaci\u00f3n de informaci\u00f3n cr\u00edtica en la interfaz de usuario (IU) de Microsoft Exchange Server permite a un atacante no autorizado realizar suplantaci\u00f3n a trav\u00e9s de una red."}], "lastModified": "2026-02-11T21:41:55.400", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:exchange_server:*:*:*:*:subscription:*:*:*", "vulnerable": true, "matchCriteriaId": "54BA4F30-C932-4BBE-A8D6-456CDE767157", "versionEndExcluding": "15.02.2562.037"}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_23:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FF76AEDA-E574-40ED-B64F-8FDEF8CAC802"}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_14:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8C98993B-82A5-48CC-947F-896CEA0CDB7F"}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_15:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7166BCE0-1D55-46B2-96B9-250AB4BB6291"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}