CVE-2025-27466

{"id": "CVE-2025-27466", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2025-09-11T14:15:41.413", "references": [{"url": "https://xenbits.xenproject.org/xsa/advisory-472.html", "tags": ["Vendor Advisory"], "source": "[email protected]"}, {"url": "http://www.openwall.com/lists/oss-security/2025/09/09/1", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://xenbits.xen.org/xsa/advisory-472.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-395"}]}], "descriptions": [{"lang": "en", "value": "[This CNA information record relates to multiple CVEs; the\ntext explains which aspects/vulnerabilities correspond to which CVE.]\n\nThere are multiple issues related to the handling and accessing of guest\nmemory pages in the viridian code:\n\n 1. A NULL pointer dereference in the updating of the reference TSC area.\n This is CVE-2025-27466.\n\n 2. A NULL pointer dereference by assuming the SIM page is mapped when\n a synthetic timer message has to be delivered. This is\n CVE-2025-58142.\n\n 3. A race in the mapping of the reference TSC page, where a guest can\n get Xen to free a page while still present in the guest physical to\n machine (p2m) page tables. This is CVE-2025-58143."}], "lastModified": "2025-11-04T22:16:08.697", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:*", "vulnerable": true, "matchCriteriaId": "79DE0A8E-ACC5-420F-923D-E4FEAFBBB77A", "versionEndExcluding": "4.17.0", "versionStartIncluding": "4.13.0"}], "operator": "OR"}]}], "sourceIdentifier": "[email protected]"}