{"cve":"CVE-2012-1515","nvd":{"published":"2012-04-02T10:46:44.373","modified":"2026-06-16T23:39:39.707","status":"Modified","description":"VMware ESXi 3.5, 4.0, and 4.1 and ESX 3.5, 4.0, and 4.1 do not properly implement port-based I/O operations, which allows guest OS users to gain guest OS privileges by overwriting memory locations in a read-only memory block associated with the Virtual DOS Machine.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-264"],"references":["http://www.securityfocus.com/bid/52820","http://www.securitytracker.com/id?1026875","http://www.us-cert.gov/cas/techalerts/TA12-164A.html","http://www.vmware.com/security/advisories/VMSA-2012-0006.html","https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-042"],"products":["vmware:esx","vmware:esxi"],"source":"nvd","synced_at":"2026-10-19T20:24:00.973572543+00:00"},"epss":{"cve":"CVE-2012-1515","score":0.00814,"percentile":0.57034,"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."]}