{"id":"CVE-2026-25701","aliases":["EUVD-2026-8638","GHSA-pgjf-9qg9-f4gv","openSUSE-SU-2026:10287-1","openSUSE-SU-2026:20878-1"],"status":"published","title":"An Insecure Temporary File vulnerability in openSUSE sdbootutil allows local users to pre-create...","description":"An Insecure Temporary File vulnerability in openSUSE sdbootutil allows local users to pre-create a directory to achieve various effects like:\n  *  gain access to possible private information found in /var/lib/pcrlock.d\n  *  manipulate the data backed up in /tmp/pcrlock.d.bak, therefore violating the integrity of the data should it be restored.\n  *   overwrite protected system files with data from /var/lib/pcrlock.d by placing symlinks to existing files in the directory tree in /tmp/pcrlock.d.bak.\n\n\nThis issue affects sdbootutil: from ? before 5880246d3a02642dc68f5c8cb474bf63cdb56bca.","severity":{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00115,"percentile":0.01584,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-377"],"published":"2026-02-25T10:59:58Z","modified":"2026-06-17T10:25:04Z","fixes":[{"ecosystem":"openSUSE:Tumbleweed","package":"sdbootutil","fixed_in":["1+git20260303.90d816d-1.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"sdbootutil","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1+git20260303.90d816d-1.1"}]}]}],"products":[{"vendor":"opensuse","product":"sdbootutil"}],"references":[{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1258241"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25701"},{"url":"https://github.com/advisories/GHSA-pgjf-9qg9-f4gv"},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-25701","tags":["web"]},{"url":"https://bugzilla.suse.com/1243889","tags":["report"]},{"url":"https://bugzilla.suse.com/1247952","tags":["report"]},{"url":"https://bugzilla.suse.com/1252871","tags":["report"]},{"url":"https://bugzilla.suse.com/1253652","tags":["report"]},{"url":"https://bugzilla.suse.com/1254317","tags":["report"]},{"url":"https://bugzilla.suse.com/1254534","tags":["report"]},{"url":"https://bugzilla.suse.com/1254865","tags":["report"]},{"url":"https://bugzilla.suse.com/1256775","tags":["report"]},{"url":"https://bugzilla.suse.com/1257612","tags":["report"]},{"url":"https://bugzilla.suse.com/1258241","tags":["report"]},{"url":"https://bugzilla.suse.com/1258944","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-25701","description":"An Insecure Temporary File vulnerability in openSUSE sdbootutil allows local users to pre-create a directory to achieve various effects like:\n  *  gain access to possible private information found in /var/lib/pcrlock.d\n  *  manipulate the data backed up in /tmp/pcrlock.d.bak, therefore violating the integrity of the data should it be restored.\n  *   overwrite protected system files with data from /var/lib/pcrlock.d by placing symlinks to existing files in the directory tree in /tmp/pcrlock.d.bak.\n\n\nThis issue affects sdbootutil: from ? before 5880246d3a02642dc68f5c8cb474bf63cdb56bca.","status":"published","published":"2026-02-25T10:59:58.372Z","modified":"2026-02-25T20:50:09.65Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-377"],"updated_at":"2026-11-02T13:41:19.694734Z"}],"euvd":[{"id":"EUVD-2026-8638","description":"An Insecure Temporary File vulnerability in openSUSE sdbootutil allows local users to pre-create a directory to achieve various effects like:\n  *  gain access to possible private information found in /var/lib/pcrlock.d\n  *  manipulate the data backed up in /tmp/pcrlock.d.bak, therefore violating the integrity of the data should it be restored.\n  *   overwrite protected system files with data from /var/lib/pcrlock.d by placing symlinks to existing files in the directory tree in /tmp/pcrlock.d.bak.\n\n\nThis issue affects sdbootutil: from ? before 5880246d3a02642dc68f5c8cb474bf63cdb56bca.","status":"published","published":"2026-02-25T10:59:58Z","modified":"2026-02-25T20:50:09Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T19:48:28.530473Z"}],"ghsa":[{"id":"GHSA-pgjf-9qg9-f4gv","title":"An Insecure Temporary File vulnerability in openSUSE sdbootutil allows local users to pre-create...","description":"An Insecure Temporary File vulnerability in openSUSE sdbootutil allows local users to pre-create a directory to achieve various effects like:\n  *  gain access to possible private information found in /var/lib/pcrlock.d\n  *  manipulate the data backed up in /tmp/pcrlock.d.bak, therefore violating the integrity of the data should it be restored.\n  *   overwrite protected system files with data from /var/lib/pcrlock.d by placing symlinks to existing files in the directory tree in /tmp/pcrlock.d.bak.\n\n\nThis issue affects sdbootutil: from ? before 5880246d3a02642dc68f5c8cb474bf63cdb56bca.","status":"published","published":"2026-02-25T12:30:29Z","modified":"2026-02-25T12:30:33Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-377"],"updated_at":"2026-11-02T15:06:22.176933Z"}],"nvd":[{"id":"CVE-2026-25701","description":"An Insecure Temporary File vulnerability in openSUSE sdbootutil allows local users to pre-create a directory to achieve various effects like:\n  *  gain access to possible private information found in /var/lib/pcrlock.d\n  *  manipulate the data backed up in /tmp/pcrlock.d.bak, therefore violating the integrity of the data should it be restored.\n  *   overwrite protected system files with data from /var/lib/pcrlock.d by placing symlinks to existing files in the directory tree in /tmp/pcrlock.d.bak.\n\n\nThis issue affects sdbootutil: from ? before 5880246d3a02642dc68f5c8cb474bf63cdb56bca.","status":"published","published":"2026-02-25T12:16:17.763Z","modified":"2026-06-17T10:25:04.627Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-377"],"updated_at":"2026-11-02T14:12:07.027269Z"}],"osv":[{"id":"openSUSE-SU-2026:10287-1","title":"sdbootutil-1+git20260303.90d816d-1.1 on GA media","description":"These are all security issues fixed in the sdbootutil-1+git20260303.90d816d-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-03-04T00:00:00Z","modified":"2026-03-23T04:54:39.359967Z","updated_at":"2026-11-02T16:58:38.101535Z"},{"id":"openSUSE-SU-2026:20878-1","title":"Security update for sdbootutil","description":"This update for sdbootutil fixes the following issues\n\nSecurity issue:\n\n- CVE-2026-25701: use of fixed directory /tmp/pcrlock.d.back in sdbootutil-update-predictions.service (bsc#1258241).\n\nNon security issues:\n\nUpdate to version 1+git20260506.25d47bf:\n- TPM based system does not auto-unlock encryption (bsc#1257612).\n- openQA test fails in reboot_after_installation - sdbootutil does not honor timeout set by user\n  (bsc#1258944).\n- Installation with Systemd-boot fails when Turkish language is selected (bsc#1253652).\n- armv7 installer requires sdbootutil and shim on armv7 (bsc#1254865).\n- sdbootutil default entry not updated after update from 20250411 to 20250522 (bsc#1243889).\n- sdbootutil: consistent naming conventions used for key/pin ? (bsc#1252871).\n- UPDATE_NVRAM is NO when BLS bootloader is used (bsc#1247952).\n- Use tmpfiles.d for /var directories (jsc#PED-14900).\n- yast reports \"Cannot enroll authentication\" during fresh install of tumbleweed (bsc#1256775).\n","status":"published","published":"2026-06-02T09:18:14Z","modified":"2026-06-04T09:00:10.999981022Z","updated_at":"2026-11-02T16:58:41.885092Z"}]}}