{"id":"CVE-2026-40852","state":"PUBLISHED","title":"Command injection via malicious configuration","description":"A highly authenticated attacker can alter the config generator injecting a payload into future created configurations. The device is not correctly checking this configuration value before passing it to an system execute leading to code execution. This can result in a total loss of confidentiality, integrity and availability.","publishedAt":"2026-05-27T08:06:36.875Z","updatedAt":"2026-05-27T11:54:17.274Z","severity":{"score":7.2,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","source":"CERTVDE"},"assigner":"CERTVDE","products":["MB connect line mbNET/mbNET.rokey","MB connect line mbNET.mini","Helmholz REX200/250","Helmholz REX100"],"affected":[{"vendor":"MB connect line","product":"mbNET/mbNET.rokey","defaultStatus":"unaffected","versions":[{"version":"0.0.0","status":"affected","lessThanOrEqual":"8.4.4","versionType":"semver"}]},{"vendor":"MB connect line","product":"mbNET.mini","defaultStatus":"unaffected","versions":[{"version":"0.0.0","status":"affected","lessThanOrEqual":"3.0.2","versionType":"semver"}]},{"vendor":"MB connect line","product":"mbNET/mbNET.rokey","defaultStatus":"unaffected","versions":[{"version":"8.4.4","status":"affected"}]},{"vendor":"MB connect line","product":"mbNET.mini","defaultStatus":"unaffected","versions":[{"version":"3.0.2","status":"affected"}]},{"vendor":"Helmholz","product":"REX200/250","defaultStatus":"unaffected","versions":[{"version":"0.0.0","status":"affected","lessThanOrEqual":"8.4.4","versionType":"semver"}]},{"vendor":"Helmholz","product":"REX100","defaultStatus":"unaffected","versions":[{"version":"0.0.0","status":"affected","lessThanOrEqual":"3.0.2","versionType":"semver"}]},{"vendor":"Helmholz","product":"REX200/250","defaultStatus":"unaffected","versions":[{"version":"8.4.4","status":"affected"}]},{"vendor":"Helmholz","product":"REX100","defaultStatus":"unaffected","versions":[{"version":"3.0.2","status":"affected"}]}],"references":["https://www.certvde.com/en/advisories/VDE-2026-054/"],"weaknesses":["CWE-78"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40852.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40852","state":"PUBLISHED","datePublished":"2026-05-27T08:06:36.875Z","dateUpdated":"2026-05-27T11:54:17.274Z","assignerShortName":"CERTVDE","assignerOrgId":"270ccfa6-a436-4e77-922e-914ec3a9685c","dateReserved":"2026-04-15T09:33:02.614Z"},"containers":{"cna":{"title":"Command injection via malicious configuration","descriptions":[{"lang":"en","value":"A highly authenticated attacker can alter the config generator injecting a payload into future created configurations. The device is not correctly checking this configuration value before passing it to an system execute leading to code execution. This can result in a total loss of confidentiality, integrity and availability."}],"affected":[{"vendor":"MB connect line","product":"mbNET/mbNET.rokey","defaultStatus":"unaffected","versions":[{"version":"0.0.0","status":"affected","lessThanOrEqual":"8.4.4","versionType":"semver"}]},{"vendor":"MB connect line","product":"mbNET.mini","defaultStatus":"unaffected","versions":[{"version":"0.0.0","status":"affected","lessThanOrEqual":"3.0.2","versionType":"semver"}]},{"vendor":"MB connect line","product":"mbNET/mbNET.rokey","defaultStatus":"unaffected","versions":[{"version":"8.4.4","status":"affected"}]},{"vendor":"MB connect line","product":"mbNET.mini","defaultStatus":"unaffected","versions":[{"version":"3.0.2","status":"affected"}]},{"vendor":"Helmholz","product":"REX200/250","defaultStatus":"unaffected","versions":[{"version":"0.0.0","status":"affected","lessThanOrEqual":"8.4.4","versionType":"semver"}]},{"vendor":"Helmholz","product":"REX100","defaultStatus":"unaffected","versions":[{"version":"0.0.0","status":"affected","lessThanOrEqual":"3.0.2","versionType":"semver"}]},{"vendor":"Helmholz","product":"REX200/250","defaultStatus":"unaffected","versions":[{"version":"8.4.4","status":"affected"}]},{"vendor":"Helmholz","product":"REX100","defaultStatus":"unaffected","versions":[{"version":"3.0.2","status":"affected"}]}],"references":[{"url":"https://www.certvde.com/en/advisories/VDE-2026-054/"}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-78","description":"CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"CERTVDE","orgId":"270ccfa6-a436-4e77-922e-914ec3a9685c","dateUpdated":"2026-05-27T08:06:36.875Z"},"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:mb_connect_line:mbnet_mbnet.rokey:*:*:*:*:*:*:*:*","versionEndIncluding":"8.4.4","versionStartIncluding":"0.0.0","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:mb_connect_line:mbnet.mini:*:*:*:*:*:*:*:*","versionEndIncluding":"3.0.2","versionStartIncluding":"0.0.0","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:mb_connect_line:mbnet:8.4.4:*:*:*:*:*:*:*","versionStartIncluding":"8.4.4","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:mb_connect_line:mbnet.mini:3.0.2:*:*:*:*:*:*:*","versionStartIncluding":"3.0.2","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:helmholz:rex200_250:*:*:*:*:*:*:*:*","versionEndIncluding":"8.4.4","versionStartIncluding":"0.0.0","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:helmholz:rex100:*:*:*:*:*:*:*:*","versionEndIncluding":"3.0.2","versionStartIncluding":"0.0.0","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:helmholz:rex200_250:8.4.4:*:*:*:*:*:*:*","versionStartIncluding":"8.4.4","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:helmholz:rex100:3.0.2:*:*:*:*:*:*:*","versionStartIncluding":"3.0.2","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"credits":[{"lang":"en","type":"finder","value":"Moritz Abrell from SySS GmbH"},{"lang":"en","type":"finder","value":"Christian Zäske from SySS GmbH"}],"source":{"advisory":"VDE-2026-054","defect":["CERT@VDE#642070"],"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.4.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-27T11:44:33.329985Z","id":"CVE-2026-40852","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-27T11:54:17.274Z"}}]}}}