{"id":"CVE-2020-8907","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-8907","generatedAt":"2026-10-27T21:18:19.436Z","title":"A vulnerability in Google Cloud Platform's guest-oslogin versions between 20190304 and 20200507 allows a user that is only granted the role \"roles/compute.osLogin\" to escalate privileges to root.","description":"A vulnerability in Google Cloud Platform's guest-oslogin versions between 20190304 and 20200507 allows a user that is only granted the role \"roles/compute.osLogin\" to escalate privileges to root. Using their membership to the \"docker\" group, an attacker with this role is able to run docker and mount the host OS. Within docker, it is possible to modify the host OS filesystem and modify /etc/groups to gain administrative privileges. All images created after 2020-May-07 (20200507) are fixed, and if you cannot update, we recommend you edit /etc/group/security.conf and remove the \"docker\" user from the OS Login entry.","published":"2020-06-22T14:15:12.000Z","lastModified":"2026-06-17T03:27:10.000Z","status":"Modified","sourceIdentifier":"cve-coordination@google.com","cvss":{"version":"4.0","score":9.3,"severity":"CRITICAL","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-276"],"affected":["google/guest-oslogin","opensuse/leap"],"epss":{"score":0.00309,"percentile":0.2352,"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":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00037.html","tags":["Mailing List","Third Party Advisory"],"source":"cve-coordination@google.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00047.html","tags":["Mailing List","Third Party Advisory"],"source":"cve-coordination@google.com"},{"url":"https://cloud.google.com/support/bulletins/#gcp-2020-008","tags":["Vendor Advisory"],"source":"cve-coordination@google.com"},{"url":"https://github.com/GoogleCloudPlatform/guest-oslogin/pull/29","tags":["Patch","Third Party Advisory"],"source":"cve-coordination@google.com"},{"url":"https://gitlab.com/gitlab-com/gl-security/gl-redteam/red-team-tech-notes/-/tree/master/oslogin-privesc-june-2020","tags":["Exploit","Third Party Advisory"],"source":"cve-coordination@google.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00037.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00047.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cloud.google.com/support/bulletins/#gcp-2020-008","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/GoogleCloudPlatform/guest-oslogin/pull/29","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gitlab.com/gitlab-com/gl-security/gl-redteam/red-team-tech-notes/-/tree/master/oslogin-privesc-june-2020","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-8907","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."}