{"id":"CVE-2026-77178","published":"2026-10-06T14:17:46.250","lastModified":"2026-10-06T18:16:55.970","description":"Oracle VM VirtualBox before 7.2.8 allows guest OS users to cause an out-of-bounds write in the host OS in pcnetReceiveNoSync in DevPCNet.cpp in the PCNet (Am79C970A) network device model.","cvssScore":9.1,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","cwes":["CWE-787"],"vendors":[],"products":[],"references":[{"url":"https://gist.github.com/entropy1337/cd0d5b368445d20c43aca2590b313892","tags":[]},{"url":"https://www.oracle.com/","tags":[]},{"url":"https://www.virtualbox.org/wiki/Download_Old_Builds_7_0","tags":[]}],"exploitRefs":[{"url":"https://gist.github.com/entropy1337/cd0d5b368445d20c43aca2590b313892","tags":[]}],"hasPoc":true,"ai":{"summary":"This vulnerability allows guest OS users to perform an out-of-bounds write in the host OS, which could lead to a complete compromise of the host system.","exploitability":"Exploitation is relatively straightforward given the guest OS user privileges required, and the vulnerability is present in the PCNet network device model.","blast_radius":"If exploited, this could result in a complete compromise of the host system, potentially leading to data loss or system corruption.","remediation":"Upgrade to VirtualBox 7.2.8 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","network","host-compromise"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-07T08:44:08.159Z"}}