{"cve":"CVE-2013-4368","nvd":{"published":"2013-10-17T23:55:04.487","modified":"2026-06-16T23:57:06.510","status":"Modified","description":"The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-200"],"references":["http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html","http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html","http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html","http://lists.opensuse.org/opensuse-updates/2013-11/msg00009.html","http://rhn.redhat.com/errata/RHSA-2013-1449.html"],"products":["xen:xen"],"source":"nvd","synced_at":"2026-10-19T20:30:15.895642412+00:00"},"epss":{"cve":"CVE-2013-4368","score":0.00367,"percentile":0.30623,"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."]}