{"id":"CVE-2026-12504","state":"PUBLISHED","title":"Loytec LINX firmware: Improper Authentication in PAM configuration","description":"Improper Authentication (CWE-287) in the PAM configuration in Loytec LIP-ME201C, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows a local attacker to authenticate as a uid=0 account without a password and obtain a root shell via an `/etc/passwd` entry with an empty password field.","publishedAt":"2026-07-24T13:58:16.232Z","updatedAt":"2026-07-24T14:57:20.563Z","severity":{"score":8.4,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"NCSC.ch"},"assigner":"NCSC.ch","products":["Loytec LIP-ME20xC","Loytec L-INX","Loytec L-GATE","Loytec L-ROC","Loytec L-IOB","Loytec L-DALI","Loytec L-VIS","Loytec L-PAD"],"affected":[{"vendor":"Loytec","product":"LIP-ME20xC","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"8.4.16","versionType":"custom"}]},{"vendor":"Loytec","product":"L-INX","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"8.4.16","versionType":"custom"}]},{"vendor":"Loytec","product":"L-GATE","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"8.4.16","versionType":"custom"}]},{"vendor":"Loytec","product":"L-ROC","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"8.4.16","versionType":"custom"}]},{"vendor":"Loytec","product":"L-IOB","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"8.4.16","versionType":"custom"}]},{"vendor":"Loytec","product":"L-DALI","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"8.4.16","versionType":"custom"}]},{"vendor":"Loytec","product":"L-VIS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"8.4.16","versionType":"custom"}]},{"vendor":"Loytec","product":"L-PAD","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"8.4.16","versionType":"custom"}]}],"references":["https://www.loytec.com/support/product-security/advisories/8521-dibt-cve-20260526-0003-pam-passwordless-uid-0-authentication-high"],"weaknesses":["CWE-287","CWE-521"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/12xxx/CVE-2026-12504.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-12504","state":"PUBLISHED","datePublished":"2026-07-24T13:58:16.232Z","dateUpdated":"2026-07-24T14:57:20.563Z","assignerShortName":"NCSC.ch","assignerOrgId":"455daabc-a392-441d-aa46-37d35189897c","dateReserved":"2026-06-17T09:48:17.638Z"},"containers":{"cna":{"title":"Loytec 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