{"id":"USN-9088-1","summary":"tigervnc vulnerability","details":"It was discovered that the TigerVNC viewer stored TLS certificate\nexceptions as trusted certificate authorities. A remote attacker could\npossibly use this issue to impersonate any VNC server after a user had\nadded a certificate exception for the attacker's server.","modified":"2026-11-13T11:28:24.117099399Z","published":"2026-11-12T20:55:23Z","related":["UBUNTU-CVE-2020-26117"],"upstream":["CVE-2020-26117","UBUNTU-CVE-2020-26117"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-9088-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26117"}],"affected":[{"package":{"name":"tigervnc","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/tigervnc?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.0+dfsg-8ubuntu2+esm1"}]}],"versions":["1.7.0+dfsg-7ubuntu1","1.7.0+dfsg-8ubuntu2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"tigervnc-common","binary_version":"1.7.0+dfsg-8ubuntu2+esm1"},{"binary_version":"1.7.0+dfsg-8ubuntu2+esm1","binary_name":"tigervnc-scraping-server"},{"binary_version":"1.7.0+dfsg-8ubuntu2+esm1","binary_name":"tigervnc-standalone-server"},{"binary_version":"1.7.0+dfsg-8ubuntu2+esm1","binary_name":"tigervnc-viewer"},{"binary_version":"1.7.0+dfsg-8ubuntu2+esm1","binary_name":"tigervnc-xorg-extension"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2020-26117"}],"ecosystem":"Ubuntu:Pro:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-9088-1.json"}}],"schema_version":"1.9.2"}