{"id":"UBUNTU-CVE-2021-46873","details":"WireGuard, such as WireGuard 0.5.3 on Windows, does not fully account for the possibility that an adversary might be able to set a victim's system time to a future value, e.g., because unauthenticated NTP is used. This can lead to an outcome in which one static private key becomes permanently useless.","modified":"2026-05-20T16:05:26.182778999Z","published":"2023-01-29T23:15:00Z","upstream":["CVE-2021-46873"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-46873"},{"type":"REPORT","url":"https://lists.zx2c4.com/pipermail/wireguard/2021-August/006916.html"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-46873"}],"affected":[{"package":{"name":"wireguard","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/wireguard?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.20200513-1~16.04.1","1.0.20200513-1~16.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"wireguard","binary_version":"1.0.20200513-1~16.04.2"},{"binary_name":"wireguard-tools","binary_version":"1.0.20200513-1~16.04.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-46873.json"}},{"package":{"name":"wireguard","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/wireguard?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.20200513-1~18.04.1","1.0.20200513-1~18.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"wireguard","binary_version":"1.0.20200513-1~18.04.2"},{"binary_name":"wireguard-tools","binary_version":"1.0.20200513-1~18.04.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-46873.json"}},{"package":{"name":"wireguard","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/wireguard?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0.20190913-1ubuntu1","0.0.20191212-1ubuntu1","0.0.20191219-1ubuntu1","1.0.20200102-1ubuntu1","1.0.20200121-1ubuntu1","1.0.20200121-2ubuntu1","1.0.20200206-1ubuntu1","1.0.20200206-2ubuntu1","1.0.20200319-1ubuntu1","1.0.20200513-1~20.04.1","1.0.20200513-1~20.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"wireguard","binary_version":"1.0.20200513-1~20.04.2"},{"binary_name":"wireguard-tools","binary_version":"1.0.20200513-1~20.04.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-46873.json"}},{"package":{"name":"wireguard","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/wireguard?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.20210424-1ubuntu1","1.0.20210914-1ubuntu1","1.0.20210914-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"wireguard","binary_version":"1.0.20210914-1ubuntu2"},{"binary_name":"wireguard-tools","binary_version":"1.0.20210914-1ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-46873.json"}},{"package":{"name":"wireguard","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/wireguard?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.20210914-1ubuntu3","1.0.20210914-1ubuntu4"],"ecosystem_specific":{"binaries":[{"binary_name":"wireguard","binary_version":"1.0.20210914-1ubuntu4"},{"binary_name":"wireguard-tools","binary_version":"1.0.20210914-1ubuntu4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-46873.json"}},{"package":{"name":"wireguard","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/wireguard?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.20210914-1.1ubuntu2","1.0.20210914-3ubuntu1","1.0.20210914-3ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"wireguard","binary_version":"1.0.20210914-3ubuntu2"},{"binary_name":"wireguard-tools","binary_version":"1.0.20210914-3ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-46873.json"}},{"package":{"name":"wireguard","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/wireguard?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.20210914-3ubuntu2","1.0.20250521-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.20250521-1ubuntu1","binary_name":"wireguard"},{"binary_name":"wireguard-tools","binary_version":"1.0.20250521-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-46873.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"low"}]}