VULNERABILITY INTELLIGENCE
CVE-2013-4368
CVSS score1.9 LOW
EPSS probability0.37%
CISA KEVNot currently listed
Published2013-10-17
Last modified2026-06-16
CVSS vectorAV:L/AC:M/Au:N/C:P/I:N/A:N
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.
Weakness classification
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor