{"id":"CVE-2021-32847","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-32847","generatedAt":"2026-10-28T02:58:41.501Z","title":"In versions 0.20210107 and prior, a malicious guest can trigger a vulnerability in the host by abusing the disk driver that may lead to the disclosure of the host memory into the virtualized guest.","description":"HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior, a malicious guest can trigger a vulnerability in the host by abusing the disk driver that may lead to the disclosure of the host memory into the virtualized guest. This issue is fixed in commit cf60095a4d8c3cb2e182a14415467afd356e982f.","published":"2023-02-20T17:15:12.000Z","lastModified":"2026-06-17T03:53:45.000Z","status":"Modified","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"},"cwe":["CWE-125"],"affected":["mobyproject/hyperkit"],"epss":{"score":0.00369,"percentile":0.30509,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.37%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/moby/hyperkit/blob/2f061e447e1435cdf1b9eda364cea6414f2c606b/src/lib/pci_virtio_block.c#L316","tags":["Exploit","Product"],"source":"security-advisories@github.com"},{"url":"https://github.com/moby/hyperkit/commit/cf60095a4d8c3cb2e182a14415467afd356e982f","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://securitylab.github.com/advisories/GHSL-2021-058-moby-hyperkit/","tags":["Exploit","Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/moby/hyperkit/blob/2f061e447e1435cdf1b9eda364cea6414f2c606b/src/lib/pci_virtio_block.c#L316","tags":["Exploit","Product"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/moby/hyperkit/commit/cf60095a4d8c3cb2e182a14415467afd356e982f","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://securitylab.github.com/advisories/GHSL-2021-058-moby-hyperkit/","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-32847","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}