{"id":"CVE-2026-64611","title":"Libcupsfilters: cups-filters: libcupsfilters: cpu exhaustion via infinite loop in cfieee1284normalizemakemodel()","summary":"A flaw was found in libcupsfilters. The cfIEEE1284NormalizeMakeModel() function enters an infinite loop when processing a printer-advertised IEEE-1284 device ID with an empty model field, causing sustained CPU consumption. A network-adja…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-835"],"vendor":"Red Hat","product":"libcupsfilters","affected":["libcupsfilters (all versions)","cups-filters","cups-filters","cups-filters","cups-filters"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-07-23T20:07:10.793765Z"},"published":"2026-07-23","updated":"2026-11-05","sourceUpdated":"2026-11-05T22:08:07.782Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64611","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:56965","label":"RHSA-2026:56965"},{"url":"https://access.redhat.com/security/cve/CVE-2026-64611"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502799","label":"RHBZ#2502799"},{"url":"https://github.com/OpenPrinting/libcupsfilters/security/advisories/GHSA-rcq7-rv5g-j3r4"}],"tags":["cve.org"],"epss":0.0063,"epssPercentile":0.50428,"ingestedAt":"2026-11-05T23:41:31.958Z","slug":"CVE-2026-64611","body":"## Overview\n\nA flaw was found in libcupsfilters. The cfIEEE1284NormalizeMakeModel() function enters an infinite loop when processing a printer-advertised IEEE-1284 device ID with an empty model field, causing sustained CPU consumption. A network-adjacent attacker could exploit this by broadcasting a specially crafted printer advertisement, leading to denial of service.\n\n## Affected\n\n- `libcupsfilters (all versions)`\n- `cups-filters`\n- `cups-filters`\n- `cups-filters`\n- `cups-filters`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nIf automatic network printer discovery is not strictly necessary for your environment, stopping the service completely eliminates the vulnerable attack surface.If you must use cups-browsed for legitimate operational reasons, you should prevent untrusted networks from feeding data to the daemon.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}