{"cve":"CVE-2011-1166","nvd":{"published":"2014-01-07T19:55:05.843","modified":"2026-06-16T23:28:51.323","status":"Modified","description":"Xen, possibly before 4.0.2, allows local 64-bit PV guests to cause a denial of service (host crash) by specifying user mode execution without user-mode pagetables.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://downloads.avaya.com/css/P8/documents/100145416","http://rhn.redhat.com/errata/RHSA-2011-0833.html","http://wiki.xen.org/wiki/Security_Announcements#XSA-1_Host_crash_due_to_failure_to_correctly_validate_PV_kernel_execution_state.","http://downloads.avaya.com/css/P8/documents/100145416","http://rhn.redhat.com/errata/RHSA-2011-0833.html"],"products":["xen:xen"],"source":"nvd","synced_at":"2026-10-19T20:30:15.895642412+00:00"},"epss":{"cve":"CVE-2011-1166","score":0.00667,"percentile":0.51891,"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."]}