CVE-2013-2076

CVE-2013-2076 describes a vulnerability in Xen versions 4.0.x, 4.1.x, and 4.2.x running on AMD64 processors. Due to incomplete saving and restoring of x87 registers during exceptions, a malicious guest domain could potentially infer sensitive floating-point instruction state from other domains, similar to CVE-2006-1056, potentially leading to the leakage of cryptographic keys. This vulnerability has a CVSS score of 4.3, indicating a medium severity with an adjacent network attack vector, high attack complexity, and a complete confidentiality impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.