{"id":"USN-8218-1","summary":"zulucrypt vulnerability","details":"Aaron Rainbolt discovered that zuluCrypt used insecure PolicyKit\nsettings in zuluPolkit. An attacker could possibly use this issue to\ncause local privilege escalation to root. (CVE-2025-53391)","modified":"2026-05-04T10:45:14.706721147Z","published":"2026-04-30T13:50:22Z","related":["UBUNTU-CVE-2025-53391"],"upstream":["CVE-2025-53391","UBUNTU-CVE-2025-53391"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8218-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-53391"}],"affected":[{"package":{"name":"zulucrypt","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/zulucrypt@5.4.0-2ubuntu0.1~esm2?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-2ubuntu0.1~esm2"}]}],"versions":["5.2.0-1","5.2.0-3","5.4.0-2","5.4.0-2build1","5.4.0-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"5.4.0-2ubuntu0.1~esm2","binary_name":"libzulucrypt-exe1.2.0"},{"binary_name":"libzulucrypt-plugins","binary_version":"5.4.0-2ubuntu0.1~esm2"},{"binary_name":"libzulucrypt1.2.0","binary_version":"5.4.0-2ubuntu0.1~esm2"},{"binary_name":"libzulucryptpluginmanager1.0.0","binary_version":"5.4.0-2ubuntu0.1~esm2"},{"binary_version":"5.4.0-2ubuntu0.1~esm2","binary_name":"zulucrypt-cli"},{"binary_name":"zulucrypt-gui","binary_version":"5.4.0-2ubuntu0.1~esm2"},{"binary_version":"5.4.0-2ubuntu0.1~esm2","binary_name":"zulumount-cli"},{"binary_name":"zulumount-gui","binary_version":"5.4.0-2ubuntu0.1~esm2"},{"binary_version":"5.4.0-2ubuntu0.1~esm2","binary_name":"zulupolkit"},{"binary_name":"zulusafe-cli","binary_version":"5.4.0-2ubuntu0.1~esm2"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"id":"CVE-2025-53391","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"},{"score":"high","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8218-1.json"}},{"package":{"name":"zulucrypt","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/zulucrypt@5.7.0-1ubuntu0.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.7.0-1ubuntu0.1~esm1"}]}],"versions":["5.5.0-1","5.6.0-1","5.6.0-2","5.7.0-1","5.7.0-1build1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"5.7.0-1ubuntu0.1~esm1","binary_name":"libzulucrypt-exe1.2.0"},{"binary_version":"5.7.0-1ubuntu0.1~esm1","binary_name":"libzulucrypt-plugins"},{"binary_name":"libzulucrypt1.2.0","binary_version":"5.7.0-1ubuntu0.1~esm1"},{"binary_version":"5.7.0-1ubuntu0.1~esm1","binary_name":"libzulucryptpluginmanager1.0.0"},{"binary_name":"zulucrypt-cli","binary_version":"5.7.0-1ubuntu0.1~esm1"},{"binary_name":"zulucrypt-gui","binary_version":"5.7.0-1ubuntu0.1~esm1"},{"binary_name":"zulumount-cli","binary_version":"5.7.0-1ubuntu0.1~esm1"},{"binary_name":"zulumount-gui","binary_version":"5.7.0-1ubuntu0.1~esm1"},{"binary_name":"zulupolkit","binary_version":"5.7.0-1ubuntu0.1~esm1"},{"binary_version":"5.7.0-1ubuntu0.1~esm1","binary_name":"zulusafe-cli"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2025-53391","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"high"}]}],"ecosystem":"Ubuntu:Pro:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8218-1.json"}},{"package":{"name":"zulucrypt","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/zulucrypt@5.7.1-2ubuntu0.1~esm1?arch=source&distro=esm-apps/jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.7.1-2ubuntu0.1~esm1"}]}],"versions":["5.7.1-2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"libzulucrypt-exe1.2.0","binary_version":"5.7.1-2ubuntu0.1~esm1"},{"binary_name":"libzulucrypt-plugins","binary_version":"5.7.1-2ubuntu0.1~esm1"},{"binary_name":"libzulucrypt1.2.0","binary_version":"5.7.1-2ubuntu0.1~esm1"},{"binary_version":"5.7.1-2ubuntu0.1~esm1","binary_name":"libzulucryptpluginmanager1.0.0"},{"binary_name":"zulucrypt-cli","binary_version":"5.7.1-2ubuntu0.1~esm1"},{"binary_version":"5.7.1-2ubuntu0.1~esm1","binary_name":"zulucrypt-gui"},{"binary_name":"zulumount-cli","binary_version":"5.7.1-2ubuntu0.1~esm1"},{"binary_name":"zulumount-gui","binary_version":"5.7.1-2ubuntu0.1~esm1"},{"binary_name":"zulupolkit","binary_version":"5.7.1-2ubuntu0.1~esm1"},{"binary_name":"zulusafe-cli","binary_version":"5.7.1-2ubuntu0.1~esm1"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:22.04:LTS","cves":[{"id":"CVE-2025-53391","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"},{"score":"high","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8218-1.json"}},{"package":{"name":"zulucrypt","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/zulucrypt@6.2.0-1ubuntu3+esm1?arch=source&distro=esm-apps/noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.2.0-1ubuntu3+esm1"}]}],"versions":["6.2.0-1ubuntu1","6.2.0-1ubuntu2","6.2.0-1ubuntu3"],"ecosystem_specific":{"binaries":[{"binary_name":"libzulucrypt-exe1.2.0","binary_version":"6.2.0-1ubuntu3+esm1"},{"binary_name":"libzulucrypt-plugins","binary_version":"6.2.0-1ubuntu3+esm1"},{"binary_version":"6.2.0-1ubuntu3+esm1","binary_name":"libzulucrypt1.2.0"},{"binary_name":"libzulucryptpluginmanager1.0.0","binary_version":"6.2.0-1ubuntu3+esm1"},{"binary_name":"zulucrypt-cli","binary_version":"6.2.0-1ubuntu3+esm1"},{"binary_name":"zulucrypt-gui","binary_version":"6.2.0-1ubuntu3+esm1"},{"binary_version":"6.2.0-1ubuntu3+esm1","binary_name":"zulumount-cli"},{"binary_version":"6.2.0-1ubuntu3+esm1","binary_name":"zulumount-gui"},{"binary_version":"6.2.0-1ubuntu3+esm1","binary_name":"zulupolkit"},{"binary_name":"zulusafe-cli","binary_version":"6.2.0-1ubuntu3+esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8218-1.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2025-53391"}],"ecosystem":"Ubuntu:Pro:24.04:LTS"}}}],"schema_version":"1.7.5"}