{"id":"CVE-2026-55731","state":"PUBLISHED","title":"Loytec LINX firmware: Unchecked input for loop condition in the SNMP agent","description":"Unchecked input for loop condition (CWE-606) in the SNMP agent 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 an unauthenticated remote attacker to cause persistent denial of service (CPU exhaustion) via a crafted SNMP GETNEXT request with a large OID component.","publishedAt":"2026-07-24T14:00:30.497Z","updatedAt":"2026-07-24T14:54:34.007Z","severity":{"score":6.6,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U","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/8531-dibt-cve-20260601-0003-unchecked-input-for-loop-condition-cwe-606-in-the-snmp-agent-medium"],"weaknesses":["CWE-606"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/55xxx/CVE-2026-55731.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55731","state":"PUBLISHED","datePublished":"2026-07-24T14:00:30.497Z","dateUpdated":"2026-07-24T14:54:34.007Z","assignerShortName":"NCSC.ch","assignerOrgId":"455daabc-a392-441d-aa46-37d35189897c","dateReserved":"2026-06-17T09:48:05.268Z"},"containers":{"cna":{"title":"Loytec 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