{"id":"CVE-2026-73584","title":"Sblim-sfcb: sblim-sfcb: privileged file corruption and denial of service via insecure temporary file handling","summary":"A flaw was found in sblim-sfcb. A local, low-privileged attacker can exploit a race condition during privileged instance migration by manipulating a temporary file in the `/tmp` directory. By repeatedly recreating a symbolic link, the at…","severity":"medium","cvss":6.3,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H","cvssSource":"cna","cwe":["CWE-377"],"vendor":"Red Hat","product":"sblim-sfcb","affected":["sblim-sfcb (all versions)","sblim-sfcb","sblim-sfcb (all versions)","sblim-sfcb (all versions)","sblim-sfcb (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-08-13T12:59:08.270240Z"},"published":"2026-08-13","updated":"2026-11-05","sourceUpdated":"2026-11-05T22:56:05.702Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-73584","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-73584"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2462721","label":"RHBZ#2462721"}],"tags":["cve.org"],"epss":0.00126,"epssPercentile":0.02344,"ingestedAt":"2026-11-05T23:41:31.934Z","slug":"CVE-2026-73584","body":"## Overview\n\nA flaw was found in sblim-sfcb. A local, low-privileged attacker can exploit a race condition during privileged instance migration by manipulating a temporary file in the `/tmp` directory. By repeatedly recreating a symbolic link, the attacker can redirect privileged output to an arbitrary file. This can lead to privileged file corruption or a denial of service (DoS) on the system.\n\n## Affected\n\n- `sblim-sfcb (all versions)`\n- `sblim-sfcb`\n- `sblim-sfcb (all versions)`\n- `sblim-sfcb (all versions)`\n- `sblim-sfcb (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nTo mitigate this issue, if instance migration is not required, run the `sfcbrepos` command with the `-i` option to disable the vulnerable migration path. For example: `sudo sfcbrepos -f -i`. Alternatively, avoid running `sfcbrepos` with elevated privileges on systems where untrusted local users can concurrently write to the `/tmp` directory. A service restart or reload may be required for changes to take effect if `sfcbrepos` is managed by a service.","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":34.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}