{"id":"UBUNTU-CVE-2025-45663","details":"An issue in NetSurf v3.11 causes the application to read uninitialized heap memory when creating a dom_event structure.","modified":"2026-05-20T16:23:29.987796264Z","published":"2025-11-03T15:15:00Z","upstream":["CVE-2025-45663"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-45663"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-45663"},{"type":"REPORT","url":"https://github.com/Fysac/netsurf-disclosure/tree/main/CVE-2025-45663"},{"type":"REPORT","url":"https://github.com/netsurf-browser/libdom/commit/9ea069f36e5de5f52d7155a71e2d536eb94de141"}],"affected":[{"package":{"name":"netsurf","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/netsurf?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2+dfsg-2.2build1"],"ecosystem_specific":{"binaries":[{"binary_name":"netsurf","binary_version":"3.2+dfsg-2.2build1"},{"binary_version":"3.2+dfsg-2.2build1","binary_name":"netsurf-common"},{"binary_version":"3.2+dfsg-2.2build1","binary_name":"netsurf-fb"},{"binary_version":"3.2+dfsg-2.2build1","binary_name":"netsurf-gtk"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-45663.json"}},{"package":{"name":"netsurf","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/netsurf?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6-3.2"],"ecosystem_specific":{"binaries":[{"binary_name":"netsurf","binary_version":"3.6-3.2"},{"binary_name":"netsurf-common","binary_version":"3.6-3.2"},{"binary_name":"netsurf-fb","binary_version":"3.6-3.2"},{"binary_name":"netsurf-gtk","binary_version":"3.6-3.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-45663.json"}},{"package":{"name":"netsurf","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/netsurf?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.10-1","3.10-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"netsurf-common","binary_version":"3.10-1build1"},{"binary_name":"netsurf-fb","binary_version":"3.10-1build1"},{"binary_name":"netsurf-gtk","binary_version":"3.10-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-45663.json"}},{"package":{"name":"netsurf","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/netsurf?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.10-3.1","3.11-1","3.11-1build4","3.11-1build5"],"ecosystem_specific":{"binaries":[{"binary_name":"netsurf-common","binary_version":"3.11-1build5"},{"binary_version":"3.11-1build5","binary_name":"netsurf-fb"},{"binary_name":"netsurf-gtk","binary_version":"3.11-1build5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-45663.json"}},{"package":{"name":"netsurf","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/netsurf?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.11-2"],"ecosystem_specific":{"binaries":[{"binary_name":"netsurf-common","binary_version":"3.11-2"},{"binary_name":"netsurf-fb","binary_version":"3.11-2"},{"binary_name":"netsurf-gtk","binary_version":"3.11-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-45663.json"}},{"package":{"name":"netsurf","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/netsurf?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.11-2","3.11-3"],"ecosystem_specific":{"binaries":[{"binary_name":"netsurf-common","binary_version":"3.11-3"},{"binary_version":"3.11-3","binary_name":"netsurf-fb"},{"binary_version":"3.11-3","binary_name":"netsurf-gtk"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-45663.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:L/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}