{"id":"CVE-2026-18368","state":"PUBLISHED","title":"Heap buffer overflow in Modbusgwd","description":"In Teltonika Networks RUTOS devices, a vulnerability exists in modbusgwd\n due to improper handling of Modbus TCP request data. A remote, \nunauthenticated attacker with access to the affected service could \ntrigger a heap-based buffer overflow, resulting in a denial of service.","publishedAt":"2026-08-13T10:52:35.564Z","updatedAt":"2026-08-13T14:43:24.994Z","severity":{"score":6,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"tlt_net"},"assigner":"tlt_net","products":["Teltonika Networks RUTOS"],"affected":[{"vendor":"Teltonika Networks","product":"RUTOS","packageName":"modbusgwd","defaultStatus":"unaffected","versions":[{"version":"7.12.0","status":"affected","lessThanOrEqual":"7.24.1","versionType":"semver"}]}],"references":["https://www.teltonika-networks.com/support/security-centre?report=CVE-2026-18368"],"weaknesses":["CWE-122"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/18xxx/CVE-2026-18368.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18368","state":"PUBLISHED","datePublished":"2026-08-13T10:52:35.564Z","dateUpdated":"2026-08-13T14:43:24.994Z","assignerShortName":"tlt_net","assignerOrgId":"001d69cf-3fc9-4203-93fb-9865b54e05b2","dateReserved":"2026-07-30T09:45:28.289Z"},"containers":{"cna":{"title":"Heap buffer overflow in Modbusgwd","descriptions":[{"lang":"en","value":"In Teltonika Networks RUTOS devices, a vulnerability exists in modbusgwd\n due to improper handling of Modbus TCP request data. A remote, \nunauthenticated attacker with access to the affected service could \ntrigger a heap-based buffer overflow, resulting in a denial of service."}],"affected":[{"vendor":"Teltonika Networks","product":"RUTOS","packageName":"modbusgwd","defaultStatus":"unaffected","versions":[{"version":"7.12.0","status":"affected","lessThanOrEqual":"7.24.1","versionType":"semver"}]}],"references":[{"url":"https://www.teltonika-networks.com/support/security-centre?report=CVE-2026-18368"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"ADJACENT","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":6,"vectorString":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","lang":"en","description":"CWE-122: Heap-based Buffer Overflow","type":"CWE"}]}],"providerMetadata":{"shortName":"tlt_net","orgId":"001d69cf-3fc9-4203-93fb-9865b54e05b2","dateUpdated":"2026-08-13T10:52:35.564Z"},"impacts":[{"capecId":"CAPEC-100","descriptions":[{"lang":"en","value":"CAPEC-100: Overflow Buffers"}]}],"solutions":[{"lang":"en","value":"Update to RUTOS 7.24.2 or later","supportingMedia":[{"type":"text/html","base64":false,"value":"Update to RUTOS 7.24.2 or later"}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.4"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-13T14:42:09.334610Z","id":"CVE-2026-18368","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-13T14:43:24.994Z"}}]}}}