{"cve":"CVE-2012-4538","nvd":{"published":"2012-11-24T20:55:03.603","modified":"2026-06-16T23:45:17.257","status":"Modified","description":"The HVMOP_pagetable_dying hypercall in Xen 4.0, 4.1, and 4.2 does not properly check the pagetable state when running on shadow pagetables, which allows a local HVM guest OS to cause a denial of service (hypervisor crash) via unspecified vectors.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00008.html","http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00009.html","http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html","http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html","http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00001.html"],"products":["xen:xen"],"source":"nvd","synced_at":"2026-10-19T20:27:27.940201468+00:00"},"epss":{"cve":"CVE-2012-4538","score":0.00443,"percentile":0.38573,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}