{"id":"CVE-2021-25635","details":"An Improper Certificate Validation vulnerability in LibreOffice allowed \nan attacker to self sign an ODF document, with a signature untrusted by \nthe target, then modify it to change the signature algorithm to an \ninvalid (or unknown to LibreOffice) algorithm and LibreOffice would incorrectly present such a signature with an unknown algorithm as a \nvalid signature issued by a trusted person\n\n\nThis issue affects LibreOffice: from 7.0 before 7.0.5, from 7.1 before 7.1.1.","modified":"2026-04-16T04:32:24.592441301Z","published":"2025-03-21T15:15:35.707Z","related":["ALSA-2022:1766"],"references":[{"type":"ADVISORY","url":"https://www.libreoffice.org/about-us/security/advisories/cve-2021-25635/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/libreoffice/core","events":[{"introduced":"0"},{"fixed":"22aa6743f53547be737cebf9a34be16c35f90d6c"},{"introduced":"0"},{"last_affected":"575c5867c4cc13d7ae78f9ce39a54a52ed38c769"}],"database_specific":{"versions":[{"introduced":"7.0.0"},{"fixed":"7.0.5.1"},{"introduced":"7.1.0.0"},{"last_affected":"7.1.1.1"}]}}],"versions":["MELD_LIBREOFFICE_REPOS","gpg4libre-review-5.4.99","libreoffice-3-5-branch-point","libreoffice-3-6-branch-point","libreoffice-3.5.0.0","libreoffice-4-0-branch-point","libreoffice-4-1-branch-point","libreoffice-4-2-branch-point","libreoffice-4-2-milestone-1","libreoffice-4-3-branch-point","libreoffice-4-4-branch-point","libreoffice-5-0-branch-point","libreoffice-5-1-branch-point","libreoffice-5-2-branch-point","libreoffice-5-3-branch-point","libreoffice-5-4-branch-point","libreoffice-6-0-branch-point","libreoffice-6-1-branch-point","libreoffice-6-2-branch-point","libreoffice-6-3-branch-point","libreoffice-6-4-branch-point","libreoffice-7-0-branch-point","libreoffice-7-1-branch-point","libreoffice-7.1.1.1","sdremote-2.0.0","windows_build_successful_2011_11_08"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-25635.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"}]}